初一有理数的乘除法运算 求初一有理数乘除法50道,计算题不带其他的(有答案)

\u6709\u7406\u6570\u4e58\u9664\u6cd5\u7684\u6cd5\u5219\u521d\u4e00\u6570\u5b66

\u4e58\u6cd5
1.\u4e24\u6570\u76f8\u4e58\uff0c\u540c\u53f7\u4e3a\u6b63\uff0c\u5f02\u53f7\u4e3a\u8d1f\uff0c\u5e76\u628a\u7edd\u5bf9\u503c\u76f8\u4e58\u3002\u4f8b\uff1a\uff08-5\uff09\u00d7\uff08-3\uff09=15 \uff08-7\uff09\u00d74=-28\u3002
2.\u4efb\u4f55\u6570\u540c0\u76f8\u4e58\uff0c\u90fd\u5f970\u3002
3.\u4e58\u79ef\u4e3a1\u7684\u4e24\u4e2a\u6709\u7406\u6570\u4e92\u4e3a\u5012\u6570\u3002\u4f8b\u5982-1/2\u4e0e-2\u3002
4.\u51e0\u4e2a\u4e0d\u662f0\u7684\u6570\u76f8\u4e58\u65f6\uff0c\u8d1f\u56e0\u6570\u5f97\u4e2a\u6570\u662f\u5076\u6570\u65f6\uff0c\u79ef\u662f\u6b63\u6570\uff1b\u5f53\u8d1f\u56e0\u6570\u6709\u5947\u6570\u4e2a\u6570\u65f6\uff0c\u79ef\u662f\u8d1f\u6570\u3002\u4f8b\uff1a2 \u00d73 \u00d7 4\u00d7\uff08-5\uff09\u7684\u79ef\u662f\u8d1f\u6570\uff0c\u800c\uff08-2\uff09\u00d7\uff08-3\uff09\u00d7 (-4\uff09\u00d7 (-5\uff09\u7684\u79ef\u662f\u6b63\u6570\u3002
5.\u51e0\u4e2a\u6570\u76f8\u4e58\uff0c\u5982\u679c\u5176\u4e2d\u6709\u56e0\u6570\u4e3a0\uff0c\u79ef\u7b49\u4e8e0\u3002[1]
\u9664\u6cd5
1.\u9664\u4ee5\u4e00\u4e2a\u4e0d\u7b49\u4e8e0\u7684\u6570\uff0c\u7b49\u4e8e\u4e58\u8fd9\u4e2a\u6570\u7684\u5012\u6570\u3002
2.\u4e24\u6570\u76f8\u9664\uff0c\u540c\u53f7\u5f97\u6b63\uff0c\u5f02\u53f7\u5f97\u8d1f\uff0c\u5e76\u628a\u7edd\u5bf9\u503c\u76f8\u9664\u3002
3.0\u9664\u4ee5\u4efb\u4f55\u4e00\u4e2a\u4e0d\u7b49\u4e8e0\u7684\u6570\uff0c\u90fd\u5f970\u3002[1]
\u6ce8\u610f\uff1a
0\u5728\u4efb\u4f55\u6761\u4ef6\u4e0b\u90fd\u4e0d\u80fd\u505a\u9664\u6570\u3002
\u6df7\u5408\u8fd0\u7b97
\u6709\u7406\u6570\u7684\u52a0\u51cf\u4e58\u9664\u6df7\u5408\u8fd0\u7b97\uff0c\u5982\u65e0\u62ec\u53f7\u6307\u51fa\u5148\u505a\u4ec0\u4e48\u8fd0\u7b97\uff0c\u5219\u6309\u7167\u201c\u5148\u4e58\u9664\uff0c\u540e\u52a0\u51cf\u201d\u7684\u987a\u5e8f\u8fdb\u884c\u3002

\u4ee5\u4e0a\u6765\u81ea\u767e\u5ea6\u767e\u79d1

\u7ec3\u4e60\u4e00(B\u7ea7)
(\u4e00)\u8ba1\u7b97\u9898:
(1)23+(-73)
(2)(-84)+(-49)
(3)7+(-2.04)
(4)4.23+(-7.57)
(5)(-7/3)+(-7/6)
(6)9/4+(-3/2)
(7)3.75+(2.25)+5/4
(8)-3.75+(+5/4)+(-1.5)
(\u4e8c)\u7528\u7b80\u4fbf\u65b9\u6cd5\u8ba1\u7b97:
(1)(-17/4)+(-10/3)+(+13/3)+(11/3)
(2)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(\u4e09)\u5df2\u77e5:X=+17(3/4),Y=-9(5/11),Z=-2.25,
\u6c42:(-X)+(-Y)+Z\u7684\u503c
(\u56db)\u7528\u201c>\u201c,\u201c0,\u5219a-ba (C)\u82e5ba (D)\u82e5a<0,ba
(\u4e8c)\u586b\u7a7a\u9898:
(1)\u96f6\u51cf\u53bba\u7684\u76f8\u53cd\u6570,\u5176\u7ed3\u679c\u662f_____________; (2)\u82e5a-b>a,\u5219b\u662f_____________\u6570; (3)\u4ece-3.14\u4e2d\u51cf\u53bb-\u03c0,\u5176\u5dee\u5e94\u4e3a____________; (4)\u88ab\u51cf\u6570\u662f-12(4/5),\u5dee\u662f4.2,\u5219\u51cf\u6570\u5e94\u662f_____________; (5)\u82e5b-a<-,\u5219a,b\u7684\u5173\u7cfb\u662f___________,\u82e5a-b<0,\u5219a,b\u7684\u5173\u7cfb\u662f______________; (6)(+22/3)-( )=-7
(\u4e09)\u5224\u65ad\u9898:
(1)\u4e00\u4e2a\u6570\u51cf\u53bb\u4e00\u4e2a\u8d1f\u6570,\u5dee\u6bd4\u88ab\u51cf\u6570\u5c0f. (2)\u4e00\u4e2a\u6570\u51cf\u53bb\u4e00\u4e2a\u6b63\u6570,\u5dee\u6bd4\u88ab\u51cf\u6570\u5c0f. (3)0\u51cf\u53bb\u4efb\u4f55\u6570,\u6240\u5f97\u7684\u5dee\u603b\u7b49\u4e8e\u8fd9\u4e2a\u6570\u7684\u76f8\u53cd\u6570. (4)\u82e5X+(-Y)=Z,\u5219X=Y+Z (5)\u82e5a0



\u7ec3\u4e60\u4e8c(B\u7ea7)
(\u4e00)\u8ba1\u7b97:
(1)(+1.3)-(+17/7)
(2)(-2)-(+2/3)
(3)|(-7.2)-(-6.3)+(1.1)|
(4)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)
(\u4e8c)\u5982\u679c|a|=4,|b|=2,\u4e14|a+b|=a+b,\u6c42a-b\u7684\u503c.
(\u4e09)\u82e5a,b\u4e3a\u6709\u7406\u6570,\u4e14|a|<|b|\u8bd5\u6bd4\u8f83|a-b|\u548c|a|-|b|\u7684\u5927\u5c0f
(\u56db)\u5982\u679c|X-1|=4,\u6c42X,\u5e76\u5728\u6570\u8f74\u4e0a\u89c2\u5bdf\u8868\u793a\u6570X\u7684\u70b9\u4e0e\u8868\u793a1\u7684\u70b9\u7684\u8ddd\u79bb.


\u7ec3\u4e60\u4e09(A\u7ea7)
(\u4e00)\u9009\u62e9\u9898:
(1)\u5f0f\u5b50-40-28+19-24+32\u7684\u6b63\u786e\u8bfb\u6cd5\u662f( )
(A)\u8d1f40,\u8d1f28,\u52a019,\u51cf24\u4e0e32\u7684\u548c (B)\u8d1f40\u51cf\u8d1f28\u52a019\u51cf\u8d1f24\u52a032 (C)\u8d1f40\u51cf28\u52a019\u51cf24\u52a032 (D)\u8d1f40\u8d1f28\u52a019\u51cf24\u51cf\u8d1f32
(2)\u82e5\u6709\u7406\u6570a+b+C<0,\u5219( )
(A)\u4e09\u4e2a\u6570\u4e2d\u6700\u5c11\u6709\u4e24\u4e2a\u662f\u8d1f\u6570 (B)\u4e09\u4e2a\u6570\u4e2d\u6709\u4e14\u53ea\u6709\u4e00\u4e2a\u8d1f\u6570 (C)\u4e09\u4e2a\u6570\u4e2d\u6700\u5c11\u6709\u4e00\u4e2a\u662f\u8d1f\u6570 (D)\u4e09\u4e2a\u6570\u4e2d\u6709\u4e24\u4e2a\u662f\u6b63\u6570\u6216\u8005\u6709\u4e24\u4e2a\u662f\u8d1f\u6570
(3)\u82e5m<0,\u5219m\u548c\u5b83\u7684\u76f8\u53cd\u6570\u7684\u5dee\u7684\u7edd\u5bf9\u503c\u662f( )
(A)0 (B)m (C)2m (D)-2m
(4)\u4e0b\u5217\u5404\u5f0f\u4e2d\u4e0eX-y-Z\u8bc9\u503c\u4e0d\u76f8\u7b49\u7684\u662f( )
(A)X-(Y-Z) (B)X-(Y+Z) (C)(X-y)+(-z) (D)(-y)+(X-Z)
(\u4e8c)\u586b\u7a7a\u9898:
(1)\u6709\u7406\u6570\u7684\u52a0\u51cf\u6df7\u5408\u8fd0\u7b97\u7684\u4e00\u822c\u6b65\u9aa4\u662f:(1)________;(2)_________;(3)________ _______;(4)__________________. (2)\u5f53b0,(a+b)(a-1)>0,\u5219\u5fc5\u6709( ) (A)b\u4e0ea\u540c\u53f7 (B)a+b\u4e0ea-1\u540c\u53f7 (C)a>1 (D)b1 (6)\u4e00\u4e2a\u6709\u7406\u6570\u548c\u5b83\u7684\u76f8\u53cd\u6570\u7684\u79ef( ) (A)\u7b26\u53f7\u5fc5\u4e3a\u6b63 (B)\u7b26\u53f7\u5fc5\u4e3a\u8d1f (C)\u4e00\u4e0d\u5c0f\u4e8e\u96f6 (D)\u4e00\u5b9a\u4e0d\u5927\u4e8e\u96f6 (7)\u82e5|a-1|*|b+1|=0,\u5219a,b\u7684\u503c( ) (A)a=1,b\u4e0d\u53ef\u80fd\u4e3a-1 (B)b=-1,a\u4e0d\u53ef\u80fd\u4e3a1 (C)a=1\u6216b=1 (D)a\u4e0eb\u7684\u503c\u76f8\u7b49 (8)\u82e5a*B*C=0,\u5219\u8fd9\u4e09\u4e2a\u6709\u7406\u6570\u4e2d( ) (A)\u81f3\u5c11\u6709\u4e00\u4e2a\u4e3a\u96f6 (B)\u4e09\u4e2a\u90fd\u662f\u96f6 (C)\u53ea\u6709\u4e00\u4e2a\u4e3a\u96f6 (D)\u4e0d\u53ef\u80fd\u6709\u4e24\u4e2a\u4ee5\u4e0a\u4e3a\u96f6
(\u4e8c)\u586b\u7a7a\u9898:
(1)\u6709\u7406\u6570\u4e58\u6cd5\u6cd5\u5219\u662f:\u4e24\u6570\u76f8\u4e58,\u540c\u53f7__________,\u5f02\u53f7_______________,\u5e76\u628a\u7edd\u5bf9\u503c_____, \u4efb\u4f55\u6570\u540c\u96f6\u76f8\u4e58\u90fd\u5f97__________________. (2)\u82e5\u56db\u4e2a\u6709\u7406\u6570a,b,c,d\u4e4b\u79ef\u662f\u6b63\u6570,\u5219a,b,c,d\u4e2d\u8d1f\u6570\u7684\u4e2a\u6570\u53ef\u80fd\u662f______________; (3)\u8ba1\u7b97(-2/199)*(-7/6-3/2+8/3)=________________; (4)\u8ba1\u7b97:(4a)*(-3b)*(5c)*1/6=__________________; (5)\u8ba1\u7b97:(-8)*(1/2-1/4+2)=-4-2+16=10\u7684\u9519\u8bef\u662f___________________; (6)\u8ba1\u7b97:(-1/6)*(-6)*(10/7)*(-7/10)=[(-1/6)*(-6)][(+10/7)*(-7/10)]=-1\u7684\u6839\u636e\u662f_______
(\u4e09)\u5224\u65ad\u9898:
(1)\u4e24\u6570\u4e4b\u79ef\u4e3a\u6b63,\u90a3\u4e48\u8fd9\u4e24\u6570\u4e00\u5b9a\u90fd\u662f\u6b63\u6570; (2)\u4e24\u6570\u4e4b\u79ef\u4e3a\u8d1f,\u90a3\u4e48\u8fd9\u4e24\u4e2a\u6570\u5f02\u53f7; (3)\u51e0\u4e2a\u6709\u7406\u6570\u76f8\u4e58,\u5f53\u56e0\u6570\u6709\u5076\u6570\u4e2a\u65f6,\u79ef\u4e3a\u6b63; (4)\u51e0\u4e2a\u6709\u7406\u6570\u76f8\u4e58,\u5f53\u79ef\u4e3a\u8d1f\u6570\u65f6,\u8d1f\u56e0\u6570\u6709\u5947\u6570\u4e2a; (5)\u79ef\u6bd4\u6bcf\u4e2a\u56e0\u6570\u90fd\u5927.


\u7ec3\u4e60(\u56db)(B\u7ea7)
(\u4e00)\u8ba1\u7b97\u9898:
(1)(-4)(+6)(-7)
(2)(-27)(-25)(-3)(-4)
(3)0.001*(-0.1)*(1.1)
(4)24*(-5/4)*(-12/15)*(-0.12)
(5)(-3/2)(-4/3)(-5/4)(-6/5)(-7/6)(-8/7)
(6)(-24/7)(11/8+7/3-3.75)*24
(\u4e8c)\u7528\u7b80\u4fbf\u65b9\u6cd5\u8ba1\u7b97:
(1)(-71/8)*(-23)-23*(-73/8)
(2)(-7/15)*(-18)*(-45/14)
(3)(-2.2)*(+1.5)*(-7/11)*(-2/7)
(\u4e09)\u5f53a=-4,b=-3,c=-2,d=-1\u65f6,\u6c42\u4ee3\u6570\u5f0f(ab+cd)(ab-cd)\u7684\u503c.
(\u56db)\u5df2\u77e51+2+3+......+31+32+33=17*33,\u8ba1\u7b97\u4e0b\u5f0f
1-3+2-6+3-9-12+...+31-93+32-96+33-99\u7684\u503c



\u7ec3\u4e60\u4e94(A\u7ea7)
(\u4e00)\u9009\u62e9\u9898:
(1)\u5df2\u77e5a,b\u662f\u4e24\u4e2a\u6709\u7406\u6570,\u5982\u679c\u5b83\u4eec\u7684\u5546a/b=0,\u90a3\u4e48( )
(A)a=0\u4e14b\u22600 (B)a=0 (C)a=0\u6216b=0 (D)a=0\u6216b\u22600
(2)\u4e0b\u5217\u7ed9\u5b9a\u56db\u7ec4\u65701\u548c1;-1\u548c-1;0\u548c0;-2/3\u548c-3/2,\u5176\u4e2d\u4e92\u4e3a\u5012\u6570\u7684\u662f( )
(A)\u53ea\u6709 (B)\u53ea\u6709 (C)\u53ea\u6709 (D)\u90fd\u662f
(3)\u5982\u679ca/|b|(b\u22600)\u662f\u6b63\u6574\u6570,\u5219( )
(A)|b|\u662fa\u7684\u7ea6\u6570 (B)|b|\u662fa\u7684\u500d\u6570 (C)a\u4e0eb\u540c\u53f7 (D)a\u4e0eb\u5f02\u53f7
(4)\u5982\u679ca>b,\u90a3\u4e48\u4e00\u5b9a\u6709( )
(A)a+b>a (B)a-b>a (C)2a>ab (D)a/b>1
(\u4e8c)\u586b\u7a7a\u9898:
(1)\u5f53|a|/a=1\u65f6,a______________0;\u5f53|a|/a=-1\u65f6,a______________0;(\u586b>,0,\u5219a___________0; (11)\u82e5ab/c0,\u5219b___________0; (12)\u82e5a/b>0,b/c(-0.3)4>-106 (B)(-0.3)4>-106>(-0.2)3 (C)-106>(-0.2)3>(-0.3)4 (D)(-0.3)4>(-0.2)3>-106 (4)\u82e5a\u4e3a\u6709\u7406\u6570,\u4e14a2>a,\u5219a\u7684\u53d6\u503c\u8303\u56f4\u662f( ) (A)a1\u6216a<0 (5)\u4e0b\u9762\u7528\u79d1\u5b66\u8bb0\u6570\u6cd5\u8868\u793a106000,\u5176\u4e2d\u6b63\u786e\u7684\u662f( ) (A)1.06*105 (B)10.6*105 (C)1.06*106 (D)0.106*107 (6)\u5df2\u77e51.2363=1.888,\u5219123.63\u7b49\u4e8e( ) (A)1888 (B)18880 (C)188800 (D)1888000 (7)\u82e5a\u662f\u6709\u7406\u6570,\u4e0b\u5217\u5404\u5f0f\u603b\u80fd\u6210\u7acb\u7684\u662f( ) (A)(-a)4=a4 (B)(-a)3=A4 (C)-a4=(-a)4 (D)-a3=a3 (8)\u8ba1\u7b97:(-1)1-(-2)2-(-3)3-(-4)4\u6240\u5f97\u7ed3\u679c\u662f( ) (A)288 (B)-288 (C)-234 (D)280
(\u4e8c)\u586b\u7a7a\u9898:
(1)\u572823\u4e2d,3\u662f________,2\u662f_______,\u5e42\u662f________;\u82e5\u628a3\u770b\u4f5c\u5e42,\u5219\u5b83\u7684\u5e95\u6570\u662f________,
\u6307\u6570\u662f________; (2)\u6839\u636e\u5e42\u7684\u610f\u4e49:(-2)3\u8868\u793a________\u76f8\u4e58; (-3)2v\u8868\u793a________\u76f8\u4e58;-23\u8868\u793a________. (3)\u5e73\u65b9\u7b49\u4e8e36/49\u7684\u6709\u7406\u6570\u662f________;\u7acb\u65b9\u7b49\u4e8e-27/64\u7684\u6570\u662f________ (4)\u628a\u4e00\u4e2a\u5927\u4e8e10\u7684\u6b63\u6570\u8bb0\u6210a*10n(n\u4e3a\u6b63\u6574\u6570)\u7684\u5f62\u6210,a\u7684\u8303\u56f4\u662f________,\u8fd9\u91ccn\u6bd4\u539f\u6765\u7684\u6574
\u6570\u4f4d\u6570\u5c11_________,\u8fd9\u79cd\u8bb0\u6570\u6cd5\u79f0\u4e3a\u79d1\u5b66\u8bb0\u6570\u6cd5; (5)\u7528\u79d1\u5b66\u8bb0\u6570\u6cd5\u8bb0\u51fa\u4e0b\u9762\u5404\u6570:4000=___________;950000=________________;\u5730\u7403
\u7684\u8d28\u91cf\u7ea6\u4e3a49800...0\u514b(28\u4f4d),\u53ef\u8bb0\u4e3a________; (6)\u4e0b\u9762\u7528\u79d1\u5b66\u8bb0\u6570\u6cd5\u8bb0\u51fa\u7684\u6570,\u539f\u6765\u5404\u4e3a\u591a\u5c11 105=_____________;2*105=______________; 9.7*107=______________9.756*103=_____________ (7)\u4e0b\u5217\u5404\u6570\u5206\u522b\u662f\u51e0\u4f4d\u81ea\u7136\u6570 7*106\u662f______\u4f4d\u6570 1.1*109\u662f________\u4f4d\u6570; 3.78*107\u662f______\u4f4d\u6570 1010\u662f________\u4f4d\u6570; (8)\u82e5\u6709\u7406\u6570m 0,b0 (B)a-|b|>0 (C)a2+b3>0 (D)a0 (C)a,b\u4e92\u4e3a\u76f8\u53cd\u6570; (D)-ab (C)a
(5)\u7528\u56db\u820d\u4e94\u5165\u6cd5\u5f97\u5230\u7684\u8fd1\u4f3c\u65701.20\u6240\u8868\u793a\u7684\u51c6\u786e\u6570a\u7684\u8303\u56f4\u662f( )
(A)1.195\u2264a<1.205 (B)1.15\u2264a<1.18 (C)1.10\u2264a<1.30 (D)1.200\u2264a<1.205 (6)\u4e0b\u5217\u8bf4\u6cd5\u6b63\u786e\u7684\u662f( ) (A)\u8fd1\u4f3c\u65703.80\u7684\u7cbe\u786e\u5ea6\u4e0e\u8fd1\u4f3c\u657038\u7684\u7cbe\u786e\u5ea6\u76f8\u540c; (B)\u8fd1\u4f3c\u657038.0\u4e0e\u8fd1\u4f3c\u657038\u7684\u6709\u6548\u6570\u5b57\u4e2a\u6570\u4e00\u6837 (C)3.1416\u7cbe\u786e\u5230\u767e\u5206\u4f4d\u540e,\u6709\u4e09\u4e2a\u6709\u6548\u6570\u5b573,1,4; (D)\u628a123*102\u8bb0\u62101.23*104,\u5176\u6709\u6548\u6570\u5b57\u6709\u56db\u4e2a.
(\u4e8c)\u586b\u7a7a\u9898:
(1)\u5199\u51fa\u4e0b\u5217\u7531\u56db\u820d\u4e94\u5165\u5f97\u5230\u7684\u8fd1\u4f3c\u503c\u6570\u7684\u7cbe\u786e\u5ea6\u4e0e\u6709\u6548\u6570\u5b57: (1)\u8fd1\u4f3c\u657085\u7cbe\u786e\u5230________\u4f4d,\u6709\u6548\u6570\u5b57\u662f________; (2)\u8fd1\u4f3c\u65703\u4e07\u7cbe\u786e\u5230______\u4f4d,\u6709\u6548\u6570\u5b57\u662f________; (3)\u8fd1\u4f3c\u65705200\u5343\u7cbe\u786e\u5230________,\u6709\u6548\u6570\u5b57\u662f_________; (4)\u8fd1\u4f3c\u65700.20\u7cbe\u786e\u5230_________\u4f4d,\u6709\u6548\u6570\u5b57\u662f_____________. (2)\u8bbee=2.71828......,\u53d6\u8fd1\u4f3c\u65702.7\u662f\u7cbe\u786e\u5230__________\u4f4d,\u6709_______\u4e2a\u6709\u6548\u6570\u5b57;
\u53d6\u8fd1\u4f3c\u65702.7183\u662f\u7cbe\u786e\u5230_________\u4f4d,\u6709_______\u4e2a\u6709\u6548\u6570\u5b57. (3)\u7531\u56db\u820d\u4e94\u5165\u5f97\u5230\u03c0=3.1416,\u7cbe\u786e\u52300.001\u7684\u8fd1\u4f3c\u503c\u662f\u03c0=__________; (4)3.1416\u4fdd\u7559\u4e09\u4e2a\u6709\u6548\u6570\u5b57\u7684\u8fd1\u4f3c\u503c\u662f_____________;
(\u4e09)\u5224\u65ad\u9898:
(1)\u8fd1\u4f3c\u657025.0\u7cbe\u786e\u4ee5\u4e2a\u75ca,\u6709\u6548\u6570\u5b57\u662f2,5; (2)\u8fd1\u4f3c\u65704\u5343\u548c\u8fd1\u4f3c\u65704000\u7684\u7cbe\u786e\u7a0b\u5ea6\u4e00\u6837; (3)\u8fd1\u4f3c\u65704\u5343\u548c\u8fd1\u4f3c\u65704*10^3\u7684\u7cbe\u786e\u7a0b\u5ea6\u4e00\u6837; (4)9.949\u7cbe\u786e\u52300.01\u7684\u8fd1\u4f3c\u6570\u662f9.95.



\u7ec3\u4e60\u516b(B\u7ea7)
(\u4e00)\u7528\u56db\u820d\u4e94\u5165\u6cd5\u5bf9\u4e0b\u5217\u5404\u6570\u53d6\u8fd1\u4f3c\u503c(\u8981\u6c42\u4fdd\u7559\u4e09\u4e2a\u6709\u6548\u6570\u5b57): (1)37.27 (2)810.9 (3)0.0045078 (4)3.079
(\u4e8c)\u7528\u56db\u820d\u4e94\u5165\u6cd5\u5bf9\u4e0b\u5217\u5404\u6570\u53d6\u8fd1\u4f3c\u503c(\u8981\u6c42\u7cbe\u786e\u5230\u5343\u4f4d): (1)37890.6 (2)213612.4 (3)1906.57
(\u4e09)\u8ba1\u7b97(\u7ed3\u679c\u4fdd\u7559\u4e24\u4e2a\u6709\u6548\u6570\u5b57): (1)3.14*3.42 (2)972*3.14*1/4



\u7ec3\u4e60\u4e5d
(\u4e00)\u67e5\u8868\u6c42\u503c:
(1)7.042 (2)2.482 (3)9.52 (4)2.0012 (5)123.42 (6)0.12342 (7)1.283 (8)3.4683 (9)(-0.5398)3 (10)53.733
(\u4e8c)\u5df2\u77e52.4682=6.901,\u4e0d\u67e5\u8868\u6c4224.682\u4e0e0.024682\u7684\u503c
(\u4e09)\u5df2\u77e55.2633=145.7,\u4e0d\u67e5\u8868\u6c42
(1)0.52633 (2)0.05263 (3)52.632 (4)52633
(\u56db)\u5df2\u77e521.762^2=473.5,\u90a3\u4e480.0021762\u662f\u591a\u5c11 \u4fdd\u7559\u4e09\u4e2a\u6709\u6548\u6570\u5b57\u7684\u8fd1\u4f3c\u503c\u662f\u591a\u5c11
(\u4e94)\u67e5\u8868\u8ba1\u7b97:\u534a\u5f84\u4e3a77cm\u7684\u7403\u7684\u8868\u9762\u79ef.(\u7403\u7684\u9762\u79ef=4\u03c0*r2

先给你这些吧,没有乘方的
(1)(-9)-(-13)+(-20)+(-2)=
(2) 3+13-(-7)÷6=
(3) (-2)-8-14-13=
(4) (-7)×(-1) ÷7+8 =
(5) (-11)×4-(-18) ÷18 =
(6) 4+(-11)-1÷(-3) =
(7) (-17)-6-16÷(-18) =
(8) 5÷7+(-1)-(-8) =
(9) (-1)×(-1)+15+1 =
(10) 3-(-5)×3÷(-15) =
(11) 6×(-14)-(-14)+(-13) =
(12) (-15)×(-13)-(-17)-(-4) =
(13) (-20) ÷13÷(-7)+11 =
(14) 8+(-1) ÷7+(-4) =
(15) (-13)-(-9)×16×(-12) =
(16) (-1)+4×19+(-2) =
(17) (-17)×(-9)-20+(-6) =
(18) (-5) ÷12-(-16)×(-15) =
(19) (-3)-13×(-5)×13=
(20) 5+(-7)+17-10 =
(21) (-10)-(-16)-13×(-16) =
(22) (-14)+4-19-12 =
(23) 5×13÷14÷(-10) =
(24) 3×1×17÷(-10) =
(25) 6+(-12)+15-(-15) =
(26) 15÷9÷13+(-7) =
(27) 2÷(-10)×1-(-8) =
(28) 11÷(-19)+(-14)-5 =
(29) 19-16+18÷(-11) =
(30) (-1)÷19+(-5)+1 =
(31) (-5)+19÷10×(-5) =
(32) 11÷(-17)×(-13)×12 =
(33) (-8)+(-10)÷8×17 =
(34) 7-(-12)÷(-1)+(-12) =
(35) 12+12-19+20 =
(36) (-13)×(-11)×20+(-4) =
(37) 17÷(-2)-2×(-19) =
(38) 1-12×(-16)+(-9) =
(39) 13×(-14)-15÷20 =
(40) (-15)×(-13)-6÷(-9) =
(41) 15×(-1)÷12+7 =
(42) (-13)+(-16)+(-14)-(-6) =
(43) 14×12×(-20)×(-13) =
(44) 17-9-20+(-10) =
(45) 12÷(-14)+(-14)+(-2) =
(46) (-15)-12÷(-17)-(-3) =
(47) 6-3÷9÷(-8) =
(48) (-20)×(-15)×10×(-4) =
(49) 7÷(-2)×(-3)÷(-14) =
(50) 13÷2×18×(-7) =
(51) 13×5+6+3=
(52) (-15)÷5÷3+(-20) =
(53) 19×4+17-4 =
(54) (-11)-(-6)×(-4)×(-9) =
(55) (-16)+16-(-8)×(-13) =
(56) 16÷(-1)÷(-10)÷(-20) =
(57) (-1)-(-9)-9÷(-19) =
(58) 13×20×(-13)×4 =
(59) 11×(-6)-3+18 =
(60) (-20)+(-12)+(-1)+(-12) =
(61) (-19)-3×(-13)×4 =
(62) (-13)÷3-5×8 =
(63) (-15)÷1+17×(-18) =
(64) (-13)÷3÷19÷8 =
(65) (-3)÷(-13)÷20×5 =
(66) 3÷12÷(-18)-18 =
(67) 5×(-19)÷13+(-6) =
(68) 4+4×(-19)-11 =
(69) (-2)+17-5+(-1) =
(70) 9+(-3)×19×(-19) =
(71) (-12)-(-6)+17÷2 =
(72) 15×(-5)-(-3)÷5 =
(73) (-10)×2÷(-1)÷4 =
(74) (-8)×16÷(-6)+4=
(75) 2-11+12+10 =
(76) (-3)+(-20)×(-7)×(-9) =
(77) (-15)+8-17÷7 =
(78) (-14)×10+18×2 =
(79) (-7)+2-(-17)×19 =
(80) (-7)÷18÷1+1 =
(81) 11÷(-9)-(-16)÷17 =
(82) 15+5×6-(-8) =
(83) (-13)×(-18)+18÷(-6) =
(84) 11-(-1)÷11×(-6) =
(85) (-4)+(-12)+19÷6 =
(86) (-18)÷(-1)÷(-19)+2 =
(87) 9×(-8)×(-6)÷11 =
(88) 20×(-3)×(-5)+1 =
(89) (-18)-2+(-11)÷20 =
(90) 15×1+4×17 =
(91) 1-10+(-14)÷(-1) =
(92) 10+(-4)×(-19)+(-12) =
(93) 15÷14÷5×7 =
(94) 8+(-13)÷3+1 =
(95) (-14)+6+(-2)×(-14) =
(96) (-5)÷(-13)÷4+7 =
(97) (-15)÷(-2)÷(-12)+(-2) =
(98) (-17)-(-20)-20×(-10) =
(99) (-7)-10-13÷3 =
(100) (-20)+(-18)+11+9=
1 -18
2 103÷6
3 -37
4 9
5 -43
6 -(20÷3)
7 -(199÷9)
8 54÷7
9 17
10 2
11 -83
12 216
13 1021÷91
14 27÷7
15 -1741
16 73
17 127
18 -(2885÷12)
19 842
20 5
21 214
22 -41
23 -(13÷28)
24 -(51÷10)
25 24
26 -(268÷39)
27 39÷5
28 -(372÷19)
29 15÷11
30 -(77÷19)
31 -(29÷2)
32 1716÷17
33 -(117÷4)
34 -17
35 25
36 2856
37 59÷2
38 184
39 -(731÷4)
40 587÷3
41 23÷4
42 -37
43 43680
44 -22
45 -(118÷7)
46 -(192÷17)
47 145÷24
48 -12000
49 -(3÷4)
50 -819
51 74
52 -21
53 89
54 205
55 -104
56 -(2÷25)
57 161÷19
58 -13520
59 -51
60 -45
61 137
62 -(133÷3)
63 -321
64 -(13÷456)
65 3÷52
66 -(1297÷72)
67 -(173÷13)
68 -83
69 9
70 1092
71 5÷2
72 -(372÷5)
73 5
74 76÷3
75 13
76 -1263
77 -(66÷7)
78 -104
79 318
80 11÷18
81 -(43÷153)
82 53
83 231
84 115÷11
85 -(77÷6)
86 20÷19
87 432÷11
88 301
89 -(411÷20)
90 83
91 5
92 74
93 3÷2
94 14÷3
95 20
96 369÷52
97 -(21÷8)
98 203
99 -(64÷3)
100 -18

初一年级第七周数学练习题

一.填空:
1.若a 0,则a+ = .若a-(b-c)=d,则a= 。
2.a与b互为相反数,c与d互为倒数,x的绝对值最小的数,则cd+(a+b)+x= 。
3.将下列各式写成省略加号的和的形式,并合理交换加数的位置。
(1)(+16)+(-29)-(+11)+(+9)= ;
(2)(+ )-5+(- )-(+ )+(- )= ;
4.某一河段的警戒水位为50.2米,最高水位为55.4米,平均水位为43.5米,最低水位为28.3米,如果取警戒水位作为0点,则最高水位为 ,平均水位为 最低水位为 (高于警戒水位取正数)
5.有理数中,所有整数的和等于 .
6.已知两数5 和-6 ,这两个数的相反数的和是 ,两数和的相反数是 ,两数和的绝对值是 .
7..若 , ,则 _____0, _______0。
8.计算-1÷9× =___,从-1中减去- 与 的和,列式为: ,所得的差是 。
9.能使 成立的有理数x有 。若∣a∣+∣b∣=0,则a与b的大小关系是 。
10.-7的倒数是___,它的相反数是___,它的绝对值是___; 的倒数是__ -2.5的倒数是___;倒数等于它本身的有理数是___。
11.实数 在数轴上的位置如图所示,则下列结论正确的是( )
A、 B、
C、 D、
二.计算:
-30-(+8)-(+6)-(-17) - - + - (-2.5)+(+ )+(- )+(+1 )

|(- )+(- )|(- )+ | 用简便方法计算:

2 × ÷(-9+19)

三.解决问题:
1.已知 求 的值。

2.若a,b互为相反数,c,d互为倒数,m的绝对值是1,求 的值。

3.为了保护广大消费者的利益,最近工商管理人员在一家面粉店抽查了20袋面 粉,称得它们的重量如下(单位:千克):
25,25,24,24,23,24,24,25,26,25,
23,23,24,25,25,24,24,26,26,25,
请你计算这20袋面粉的总重量和每袋的平均重量,你能找出比较简单的计算方法吗?请你试试,根据你的计算结果,你对这次检查情况有什么看法?(每袋面粉的标准重量为:25千克)

(1)(-9)-(-13)+(-20)+(-2)=
(2) 3+13-(-7)÷6=
(3) (-2)-8-14-13=
(4) (-7)×(-1) ÷7+8 =
(5) (-11)×4-(-18) ÷18 =
(6) 4+(-11)-1÷(-3) =
(7) (-17)-6-16÷(-18) =
(8) 5÷7+(-1)-(-8) =
(9) (-1)×(-1)+15+1 =
(10) 3-(-5)×3÷(-15) =
(11) 6×(-14)-(-14)+(-13) =
(12) (-15)×(-13)-(-17)-(-4) =
(13) (-20) ÷13÷(-7)+11 =
(14) 8+(-1) ÷7+(-4) =
(15) (-13)-(-9)×16×(-12) =
(16) (-1)+4×19+(-2) =
(17) (-17)×(-9)-20+(-6) =
(18) (-5) ÷12-(-16)×(-15) =
(19) (-3)-13×(-5)×13=
(20) 5+(-7)+17-10 =
(21) (-10)-(-16)-13×(-16) =
(22) (-14)+4-19-12 =
(23) 5×13÷14÷(-10) =
(24) 3×1×17÷(-10) =
(25) 6+(-12)+15-(-15) =
(26) 15÷9÷13+(-7) =
(27) 2÷(-10)×1-(-8) =
(28) 11÷(-19)+(-14)-5 =
(29) 19-16+18÷(-11) =
(30) (-1)÷19+(-5)+1 =
(31) (-5)+19÷10×(-5) =
(32) 11÷(-17)×(-13)×12 =
(33) (-8)+(-10)÷8×17 =
(34) 7-(-12)÷(-1)+(-12) =
(35) 12+12-19+20 =
(36) (-13)×(-11)×20+(-4) =
(37) 17÷(-2)-2×(-19) =
(38) 1-12×(-16)+(-9) =
(39) 13×(-14)-15÷20 =
(40) (-15)×(-13)-6÷(-9) =
(41) 15×(-1)÷12+7 =
(42) (-13)+(-16)+(-14)-(-6) =
(43) 14×12×(-20)×(-13) =
(44) 17-9-20+(-10) =
(45) 12÷(-14)+(-14)+(-2) =
(46) (-15)-12÷(-17)-(-3) =
(47) 6-3÷9÷(-8) =
(48) (-20)×(-15)×10×(-4) =
(49) 7÷(-2)×(-3)÷(-14) =
(50) 13÷2×18×(-7) =
(51) 13×5+6+3=
(52) (-15)÷5÷3+(-20) =
(53) 19×4+17-4 =
(54) (-11)-(-6)×(-4)×(-9) =
(55) (-16)+16-(-8)×(-13) =
(56) 16÷(-1)÷(-10)÷(-20) =
(57) (-1)-(-9)-9÷(-19) =
(58) 13×20×(-13)×4 =
(59) 11×(-6)-3+18 =
(60) (-20)+(-12)+(-1)+(-12) =
(61) (-19)-3×(-13)×4 =
(62) (-13)÷3-5×8 =
(63) (-15)÷1+17×(-18) =
(64) (-13)÷3÷19÷8 =
(65) (-3)÷(-13)÷20×5 =
(66) 3÷12÷(-18)-18 =
(67) 5×(-19)÷13+(-6) =
(68) 4+4×(-19)-11 =
(69) (-2)+17-5+(-1) =
(70) 9+(-3)×19×(-19) =
(71) (-12)-(-6)+17÷2 =
(72) 15×(-5)-(-3)÷5 =
(73) (-10)×2÷(-1)÷4 =
(74) (-8)×16÷(-6)+4=
(75) 2-11+12+10 =
(76) (-3)+(-20)×(-7)×(-9) =
(77) (-15)+8-17÷7 =
(78) (-14)×10+18×2 =
(79) (-7)+2-(-17)×19 =
(80) (-7)÷18÷1+1 =
(81) 11÷(-9)-(-16)÷17 =
(82) 15+5×6-(-8) =
(83) (-13)×(-18)+18÷(-6) =
(84) 11-(-1)÷11×(-6) =
(85) (-4)+(-12)+19÷6 =
(86) (-18)÷(-1)÷(-19)+2 =
(87) 9×(-8)×(-6)÷11 =
(88) 20×(-3)×(-5)+1 =
(89) (-18)-2+(-11)÷20 =
(90) 15×1+4×17 =
(91) 1-10+(-14)÷(-1) =
(92) 10+(-4)×(-19)+(-12) =
(93) 15÷14÷5×7 =
(94) 8+(-13)÷3+1 =
(95) (-14)+6+(-2)×(-14) =
(96) (-5)÷(-13)÷4+7 =
(97) (-15)÷(-2)÷(-12)+(-2) =
(98) (-17)-(-20)-20×(-10) =
(99) (-7)-10-13÷3 =
(100) (-20)+(-18)+11+9=
1 -18
2 103÷6
3 -37
4 9
5 -43
6 -(20÷3)
7 -(199÷9)
8 54÷7
9 17
10 2
11 -83
12 216
13 1021÷91
14 27÷7
15 -1741
16 73
17 127
18 -(2885÷12)
19 842
20 5
21 214
22 -41
23 -(13÷28)
24 -(51÷10)
25 24
26 -(268÷39)
27 39÷5
28 -(372÷19)
29 15÷11
30 -(77÷19)
31 -(29÷2)
32 1716÷17
33 -(117÷4)
34 -17
35 25
36 2856
37 59÷2
38 184
39 -(731÷4)
40 587÷3
41 23÷4
42 -37
43 43680
44 -22
45 -(118÷7)
46 -(192÷17)
47 145÷24
48 -12000
49 -(3÷4)
50 -819
51 74
52 -21
53 89
54 205
55 -104
56 -(2÷25)
57 161÷19
58 -13520
59 -51
60 -45
61 137
62 -(133÷3)
63 -321
64 -(13÷456)
65 3÷52
66 -(1297÷72)
67 -(173÷13)
68 -83
69 9
70 1092
71 5÷2
72 -(372÷5)
73 5
74 76÷3
75 13
76 -1263
77 -(66÷7)
78 -104
79 318
80 11÷18
81 -(43÷153)
82 53
83 231
84 115÷11
85 -(77÷6)
86 20÷19
87 432÷11
88 301
89 -(411÷20)
90 83
91 5
92 74
93 3÷2
94 14÷3
95 20
96 369÷52
97 -(21÷8)
98 203
99 -(64÷3)

2+64+5564+456+452645+(-265215416546516549841619849194919841981974195)+1564145411519819198419819819819819111919141784154198498198198198191919191919+2233333333333333333333

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    绛旓細鏈夌悊鏁扮殑鍔犲噺涔橀櫎杩愮畻鏄暟瀛︿腑鍩虹涓旈噸瑕佺殑姒傚康锛屽畠娑夊強鍒板姝f暟銆佽礋鏁颁互鍙婂垎鏁扮殑鍚勭鏁板鎿嶄綔銆1銆佸姞娉曡繍绠楋細鏈夌悊鏁扮殑鍔犳硶杩愮畻鏄皢涓や釜鏈夌悊鏁扮浉鍔犮傚綋涓や釜鏈夌悊鏁扮殑绗﹀彿鐩稿悓鏃讹紝灏嗗畠浠殑缁濆鍊肩浉鍔狅紝骞朵繚鐣欑浉鍚岀殑绗﹀彿銆傚綋绗﹀彿涓嶅悓鐨勬椂鍊欙紝灏嗙粷瀵瑰艰緝澶х殑鏁板噺鍘荤粷瀵瑰艰緝灏忕殑鏁帮紝骞朵繚鐣欑粷瀵瑰艰緝澶х殑鏁...
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