加减乘除混合运算(四年级) 四年级小数加减乘除混合运算题目
\u56db\u5e74\u7ea7\u4e0a\u518c\u52a0\u51cf\u4e58\u9664\u6df7\u5408\u8fd0\u7b97\u8ba1\u7b97\u98981\u30011976+7093-35\u00d7131
2\u300184+9050-5096\u00f7104
3\u30011882+87\u00d735-796
4\u3001(258+893)\u00d71677\u00f7129
5\u30016254+585\u00f7(1901-1856)
6\u30011300+5145\u00f7343\u00d7202
7\u3001(1061-911)+112\u00d7135
8\u30016835-819+7975\u00f7725
9\u30019369-93\u00d762+460
10\u30014047-142\u00d71313\u00f7101
11\u3001(6340-5122)\u00f758+647
12\u3001(4456-964)\u00f7194\u00d7398
13\u300170\u00d7160+636-123
14\u3001587\u00d777+5776\u00f7304
15\u3001251\u00d7113-161\u00d747
\u52a0\u51cf\u4e58\u9664\u6df7\u5408\u8fd0\u7b97\u6cd5\u5219\uff1a
1\u3001\u540c\u7ea7\u8fd0\u7b97\u4ece\u5de6\u5f80\u53f3\u4f9d\u6b21\u8ba1\u7b97\u3002
2\u3001\u5f02\u7ea7\u8fd0\u7b97\u5148\u7b97\u4e8c\u7ea7\u8fd0\u7b97\uff0c\u518d\u7b97\u4e00\u7ea7\u8fd0\u7b97\uff08\u00d7 \u00f7\u4e3a\u4e8c\u7ea7\uff0c+ -\u4e3a\u4e00\u7ea7\uff09 \u6709\u62ec\u53f7\u7684\u5148\u62ec\u53f7\u91cc\u9762\u7684\uff0c\u518d\u7b97\u62ec\u53f7\u5916\u9762\u7684\u3002
3\u3001\u5728\u6ca1\u6709\u62ec\u53f7\u7684\u7b97\u5f0f\u91cc\uff0c\u6709\u4e58\u3001\u9664\u6cd5\u548c\u52a0\u3001\u51cf\u6cd5\uff0c\u8981\u5148\u7b97\u4e58\u3001\u9664\u6cd5\uff0c\u540e\u7b97\u52a0\u3001\u51cf\u6cd5\u3002
(31.8+3.2\u00d74) \u00f7 5 31.5\u00d74\u00f7(6+3)
0.64\u00d725\u00d77.8+2.2 2\u00f72.5+2.5\u00f72
36.25\u00f74.25\u00d79.9 5180\uff0d705\u00d76
24\u00f72.4\uff0d2.5\u00d70.8 (4121+2389)\u00f77
671\u00d715-974 469\u00d712+1492 19.4\u00d76.1\u00d72.3
5.67\u00d70.2-0.62 18.1\u00d70.92+3.93 0.4\u00d70.7\u00d70.25
0.78+5.436+1 4. 8\u00d7 5\u00f74+1\u00f74 9. 9x5\u00f76+5\u00f76
10. 3\u00f74x8\u00f79-1\u00f73 14. 31x5\u00f76-5\u00f76 16. 5\u00f79x18-14x2\u00f77
20. 3x2\u00f79+1\u00f73 35. 95\u00f7\uff0864-45\uff09 36. 178-145\u00f75\u00d76+42
7.2\u00f70.8-1.2\u00d75 6.5\u00d7\uff084.8-1.2\u00d74\uff09 28-(3.4+1.25\u00d72.4)
2.55\u00d77.1+2.45\u00d77.1 777\u00d79+1111\u00d73 \uff0831.8+3.2\u00d74\uff09\u00f75
31.5\u00d74\u00f7(6+3) 0.64\u00d725\u00d77.8+2.2 2\u00f72.5+2.5\u00f72
194\uff0d64.8\u00f71.8\u00d70.9 36.72\u00f74.25\u00d79.9 5180\uff0d705\u00d76
24\u00f72.4\uff0d2.5\u00d70.8 (4121+2389)\u00f77 671\u00d715-974
469\u00d712+1492 405\u00d7(3213-3189) 19.4\u00d76.1\u00d72.3
5.67\u00d70.2-0.62 18.1\u00d70.92+3.93 0.043\u00d724+0.875
5+21*8/2-6-59
68/21-8-11*8+61
-2/9-7/9-56
4.6-(-3/4+1.6-4-3/4)
1/2+3+5/6-7/12
[2/3-4-1/4*(-0.4)]/1/3+2
22+(-4)+(-2)+4*3
-2*8-8*1/2+8/1/8
(2/3+1/2)/(-1/12)*(-12)
(-28)/(-6+4)+(-1)
2/(-2)+0/7-(-8)*(-2)
(1/4-5/6+1/3+2/3)/1/2
18-6/(-3)*(-2)
(5+3/8*8/30/(-2)-3
(-84)/2*(-3)/(-6)
1/2*(-4/15)/2/3
-3x+2y-5x-7y
有理数的加减混合运算
【【同步达纲练习】
1.选择题:
(1)把-2-(+3)-(-5)+(-4)+(+3)写成省略括号和的形式,正确的是( )
A.-2-3-5-4+3 B.-2+3+5-4+3
C.-2-3+5-4+3 D.-2-3-5+4+3
(2)计算(-5)-(+3)+(-9)-(-7)+ 所得结果正确的是( )
A.-10 B.-9 C.8 D.-23
(3)-7,-12,+2的代数和比它们的绝对值的和小( )
A.-38 B.-4 C.4 D.38
(4)若 +(b+3)2=0,则b-a- 的值是( )
A.-4 B.-2 C.-1 D.1
(5)下列说法正确的是( )
A.两个负数相减,等于绝对值相减
B.两个负数的差一定大于零
C.正数减去负数,实际是两个正数的代数和
D.负数减去正数,等于负数加上正数的绝对值
(6)算式-3-5不能读作( )
A.-3与5的差 B.-3与-5的和
C.-3与-5的差 D.-3减去5
2.填空题:(4′×4=16′)
(1)-4+7-9=- - + ;
(2)6-11+4+2=- + - + ;
(3)(-5)+(+8)-(+2)-(-3)= + - + ;
(4)5-(-3 )-(+7)-2 =5+ - - + - .
3.把下列各式写成省略括号的和的形式,并说出它们的两种读法:(8′×2=16′)
(1)(-21)+(+16)-(-13)-(+7)+(-6);
(2)-2 -(- )+(-0.5)+(+2)-(+ )-2.
4.计算题(6′×4=24′)
(1)-1+2-3+4-5+6-7;
(2)-50-28+(-24)-(-22);
(3)-19.8-(-20.3)-(+20.2)-10.8;
(4)0.25- +(-1 )-(+3 ).
5.当x=-3.7,y=-1.8,z=-1.5时,求下列代数式的值(5′×4=20′)
(1)x+y-z; (2)-x-y+z; (3)-x+y+z; (4)x-y-z.
【素质优化训练】
(1) (-7)-(+5)+(+3)-(-9)=-7 5 3 9;
(2)-(+2 )-(-1 )-(+3 )+(- )
=( 2 )+( 1 )+( 3 )+( );
(3)-14 5 (-3)=-12;
(4)-12 (-7) (-5) (-6)=-16;
(5)b-a-(+c)+(-d)= a b c d;
2.当x= ,y=- ,z=- 时,分别求出下列代数式的值;
(1)x-(-y)+(-z); (2)x+(-y)-(+z);
(3)-(-x)-y+z; (4)-x-(-y)+z.
3.就下列给的三组数,验证等式:
a-(b-c+d)=a-b+c-d是否成立.
(1)a=-2,b=-1,c=3,d=5;
(2)a=23 ,b=-8,c=-1 ,d=1 .
4.计算题
(1)-1-23.33-(+76.76);
(2)1-2*2*2*2;
(3)(-6-24.3)-(-12+9.1)+(0-2.1);
(4)-1+8-7
加减乘除混合运算应该先算乘除后算加减,有括号的先算括号里的,再算括号外面的。
绛旓細涓鍏辨湁鍏绛旀锛氱1绉嶏細4梅4+4梅4=2 绗2绉嶏細4-锛4+4锛壝4=2 绗3绉嶏細4梅[锛4+4锛壝4]=2 绗4绉嶏細4脳4梅锛4+4锛=2 绗5绉嶏細4梅锛4+4锛壝4=2 绗6绉嶏細-锛4+4锛壝4+4=2 杩欓亾棰樹富瑕佽冨療鏁板鍔犲噺涔橀櫎娣峰悎杩愮畻銆
绛旓細锛1锛夈26脳4-25梅锛125梅25锛=99 锛2锛夈13+7脳2-8=19 锛3锛夈24脳5-6=114 锛4锛銆侊紙37-9锛壝7=4 锛5锛夈26脳4=104 锛6锛夈63-7+8梅4=58 锛7锛16脳2梅4+3=11 锛8锛91+9脳100=991 锛9锛41脳7梅2=143.5 锛10锛88-12+12脳2=100 锛11锛78脳50锛1440梅12 = 3...
绛旓細(2)70-13+95-8= (3)99脳83-91梅46= (4)6+97+83梅22= (5)37梅54-30脳46= (6)98-62-71-70= (7)24梅31脳28梅31= (8)50+18梅63脳8= (9)70梅77梅9梅68= (10)11+88+85+70= (11)20梅6+9梅49= (12)99-28+14梅6= (13)75脳99-95-7= (14)35脳55-91+96= (...
绛旓細1723-1152/32 (8.2+4.36)*1.5 1250+205*34 3270+135*37 8402-7236/18=1723-36 =12.56*1.5 =1250+6970 =3270+4995 =8402=402=1687 =18.84 =8220 =8265
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绛旓細36.25梅4.25脳9.9 5180锛705脳6 24梅2.4锛2.5脳0.8 (4121+2389)梅7 671脳15-974 469脳12+1492 19.4脳6.1脳2.3 5.67脳0.2-0.62 18.1脳0.92+3.93 0.4脳0.7脳0.25 0.78+5.436+1 4. 8脳 5梅4+1梅4 9. 9x5梅6+5梅6 10. 3梅4x8梅9-1梅3 14. 31x5梅6...
绛旓細1銆(135+415)梅5+16 =550梅5+16 =110+16 =126 2銆1200-20脳18 =1200-360 =840 3銆720-720梅15 =720-48 =672 4銆(360-144)梅24脳3 =116梅24脳3 =9脳3 =27 5銆2400梅80-14脳2 =30-14脳2 =30-28 =2
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