谁能帮我找100道初一的数学计算题?最好要有答案 100道七年级的数学计算题 要答案
\u8c01\u80fd\u5e2e\u6211\u627e100\u9053\u521d\u4e00\u7684\u6570\u5b66\u8ba1\u7b97\u9898\uff1f3.3ab-4ab+8ab-7ab+ab=______.
4.7x-(5x-5y)-y=______.
5.23a3bc2-15ab2c+8abc-24a3bc2-8abc=______.
6.-7x2+6x+13x2-4x-5x2=______.
7.2y+(-2y+5)-(3y+2)=______.
11.(2x2-3xy+4y2)+(x2+2xy-3y2)=______.
12.2a-(3a-2b+2)+(3a-4b-1)=______.
13.-6x2-7x2+15x2-2x2=______.
14.2x-(x+3y)-(-x-y)-(x-y)=______.
16.2x+2y-[3x-2(x-y)]=______.
17.5-(1-x)-1-(x-1)=______.
18.(
)+(4xy+7x2-y2)=10x2-xy.
19.(4xy2-2x2y)-(
)=x3-2x2y+4xy2+y3.
21.\u5df2\u77e5A=x3-2x2+x-4,B=2x3-5x+3,\u8ba1\u7b97A+B=______.
22.\u5df2\u77e5A=x3-2x2+x-4,B=2x3-5x+3,\u8ba1\u7b97A-B=______.
23.\u82e5a=-0.2,b=0.5,\u4ee3\u6570\u5f0f-(|a2b|-|ab2|)\u7684\u503c\u4e3a______.
25.\u4e00\u4e2a\u591a\u9879\u5f0f\u51cf\u53bb3m4-m3-2m+5\u5f97-2m4-3m3-2m2-1,\u90a3\u4e48\u8fd9\u4e2a\u591a\u9879\u5f0f\u7b49\u4e8e______.
26.-(2x2-y2)-[2y2-(x2+2xy)]=______.
27.\u82e5-3a3b2\u4e0e5ax-1by+2\u662f\u540c\u7c7b\u9879,\u5219x=______,y=______.
28.(-y+6+3y4-y3)-(2y2-3y3+y4-7)=______.
29.\u5316\u7b80\u4ee3\u6570\u5f0f4x2-[7x2-5x-3(1-2x+x2)]\u7684\u7ed3\u679c\u662f______.
30.2a-b2+c-d3=2a+(
)-d3=2a-d3-(
)=c-(
).
31.3a-(2a-3b)+3(a-2b)-b=______.
32.\u5316\u7b80\u4ee3\u6570\u5f0fx-[y-2x-(x+y)]\u7b49\u4e8e______.
33.[5a2+(
)a-7]+[(
)a2-4a+(
)]=a2+2a+1.
34.3x-[y-(2x+y)]=______.
35.\u5316\u7b80|1-x+y|-|x-y|(\u5176\u4e2dx0)\u7b49\u4e8e______.
36.\u5df2\u77e5x\u2264y,x+y-|x-y|=______.
37.\u5df2\u77e5x<0,y<0,\u5316\u7b80|x+y|-|5-x-y|=______.
38.4a2n-an-(3an-2a2n)=______.
39.\u82e5\u4e00\u4e2a\u591a\u9879\u5f0f\u52a0\u4e0a-3x2y+2x2-3xy-4\u5f97
2x2y+3xy2-x2+2xy,
\u5219\u8fd9\u4e2a\u591a\u9879\u5f0f\u4e3a______.
40.-5xm-xm-(-7xm)+(-3xm)=______.
41.\u5f53a=-1,b=-2\u65f6,
[a-(b-c)]-[-b-(-c-a)]=______.
43.\u5f53a=-1,b=1,c=-1\u65f6,
-[b-2(-5a)]-(-3b+5c)=______.
44.-2(3x+z)-(-6x)+(-5y+3z)=______.
45.-5an-an+1-(-7an+1)+(-3an)=______.
46.3a-(2a-4b-6c)+3(-2c+2b)=______.
48.9a2+[7a2-2a-(-a2+3a)]=______.
50.\u5f532y-x=5\u65f6,5(x-2y)2-3(-x+2y)-100=______.
(1):(-8)-(-15)+(-9)-(-12)
=-8+15-9+12
=10
(2):(-40)+29-(-15)-|-24|
=-21+15-24
=-30
(3):(2/3)-(1/8)-(-1/3)+(-3/8)
=\uff082/3)-(-1/3)-\uff08\uff081/8\uff09-\uff083/8)\uff09
=1+(1/4)
=5/4
(4):0.5+(-1/4)-(-2.75)+(1/2)
=0.5+\uff081/2\uff09+\uff08(-1/4)+2.75)
=1+2.5
=3.5
(5):(-2/5)+(-5/6)-(-4.5)-0.6
=(-2/5\uff09-0.6-5/6+4.5
=-1+\uff0816/6\uff09
=16/6
(6):(-2/3)+(-1/6)-(-1/4)-(1/2)
=\uff08-2/3\uff09-\uff081/6\uff09+(1/4\uff09-\uff081/2\uff09
=-13/12
(7):(-3/3)\u4e58(-1/2)*(-8/15)
=-1*\uff08-1/2\uff09*\uff08-8/15\uff09
=-4/15
(8):(-0.1)\u9664\u4ee5(1/2)*(1000)
=-0.2*1000
=-200
(9):(-18)\u9664\u4ee52.25\u4e584/9\u9664\u4ee5(-16)
=-8*\uff084/9\uff09/\uff08-16\uff09
=-\uff0832/9\uff09/\uff08-16\uff09
=2/9
(10):[(3/4)-(17/36)+(7/12)]\u4e58|-36|
=36-17+21
=40
(11):(504/11)\u9664\u4ee59
=\uff08504/11\uff09*\uff081/9\uff09
=56/11
(12):(-5)\u4e58(-27/7)+(-7)\u4e58(-27/7)+12\u4e58(-27/7)
=\uff08\uff08-5\uff09+\uff08-7\uff09+12\uff09\uff09*\uff08-27/7\uff09
=0*\uff08-27/7\uff09
=0 \u7b54\u6848\u80af\u5b9a\u5bf9
http://wenku.baidu.com/search?word=%C6%DF%C4%EA%BC%B6%C9%CF%B2%E1%CA%FD%D1%A7&lm=0&od=0
\u8fd9\u6837\u7684\u95ee\u9898\u53ef\u4ee5\u5230\u767e\u5ea6\u6587\u5e93\u4e2d\u53bb\u627e\uff0c\u5f88\u65b9\u4fbf\u7684
4.7x-(5x-5y)-y=______.
5.23a3bc2-15ab2c+8abc-24a3bc2-8abc=______.
6.-7x2+6x+13x2-4x-5x2=______.
7.2y+(-2y+5)-(3y+2)=______.
11.(2x2-3xy+4y2)+(x2+2xy-3y2)=______.
12.2a-(3a-2b+2)+(3a-4b-1)=______.
13.-6x2-7x2+15x2-2x2=______.
14.2x-(x+3y)-(-x-y)-(x-y)=______.
16.2x+2y-[3x-2(x-y)]=______.
17.5-(1-x)-1-(x-1)=______.
18.(
)+(4xy+7x2-y2)=10x2-xy.
19.(4xy2-2x2y)-(
)=x3-2x2y+4xy2+y3.
21.已知A=x3-2x2+x-4,B=2x3-5x+3,计算A+B=______.
22.已知A=x3-2x2+x-4,B=2x3-5x+3,计算A-B=______.
23.若a=-0.2,b=0.5,代数式-(|a2b|-|ab2|)的值为______.
25.一个多项式减去3m4-m3-2m+5得-2m4-3m3-2m2-1,那么这个多项式等于______.
26.-(2x2-y2)-[2y2-(x2+2xy)]=______.
27.若-3a3b2与5ax-1by+2是同类项,则x=______,y=______.
28.(-y+6+3y4-y3)-(2y2-3y3+y4-7)=______.
29.化简代数式4x2-[7x2-5x-3(1-2x+x2)]的结果是______.
30.2a-b2+c-d3=2a+(
)-d3=2a-d3-(
)=c-(
).
31.3a-(2a-3b)+3(a-2b)-b=______.
32.化简代数式x-[y-2x-(x+y)]等于______.
33.[5a2+(
)a-7]+[(
)a2-4a+(
)]=a2+2a+1.
34.3x-[y-(2x+y)]=______.
35.化简|1-x+y|-|x-y|(其中x0)等于______.
36.已知x≤y,x+y-|x-y|=______.
37.已知x
绛旓細50.褰2y-x=5鏃,5(x-2y)2-3(-x+2y)-100=___.
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绛旓細鏈夋柟绋 鏈夎绠 鏈変簺鏄湁绛旀鐨 甯屾湜鑳藉府鍒颁綘 2x+17=35 3x-64=11 12+8x=52 0.8x-4.2=2.2 2x+5=10 3x-15=75 4x+4o=320 3x+77=122 5x-1.6=0.6 6x-4=20 10x-0.6=2.4 500-12x=140 1) 66x+17y=3967 25x+y=1200 绛旀锛歺=48 y=47 (2) 18x+23y=2303 74x...
绛旓細5銆佹煇鏍″叚骞寸骇鏈変袱涓彮锛屼笂瀛︽湡绾鏁板骞冲潎鎴愮哗鏄85鍒嗐傚凡鐭ュ叚锛1锛夌彮40浜猴紝骞冲潎鎴愮哗涓87.1鍒嗭紱鍏紙2锛夌彮鏈42浜猴紝骞冲潎鎴愮哗鏄灏戝垎锛熷钩鍧囨垚缁╂槸x鍒 40*87.1+42x=85*82 3484+42x=6970 42x=3486 x=83 骞冲潎鎴愮哗鏄83鍒 6銆佸鏍′拱鏉10绠辩矇绗旓紝鐢ㄥ幓250鐩掑悗锛岃繕鍓╀笅550鐩掞紝骞冲潎姣忕澶氬皯鐩...
绛旓細閲囩撼鐜:100% 甯姪鐨浜:40.5涓 鎴戜篃鍘荤瓟棰樿闂釜浜洪〉 鍏虫敞 灞曞紑鍏ㄩ儴 鎴戝彧鑳界粰浣犺繖涔堝,鐢佃剳鏀句笉涓嬪お澶氱殑. 1銆佹煇宸ュ巶鐢层佷箼銆佷笝涓変釜宸ヤ汉姣忓ぉ鎵鐢熶骇鐨勬満鍣ㄩ浂浠舵暟鏄:鐢插拰涔欑殑姣旀槸3:4,涔欏拰涓欑殑姣旀槸5:6,鑻ヤ箼姣忓ぉ鐢熶骇鐨勪欢鏁版瘮鐢插拰涓欎袱浜虹殑鍜屽皯931浠,闂瘡涓伐浜烘瘡澶╃敓浜у灏戜欢? 2銆佸凡鐭鍒濅竴(1)涓庡垵...
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