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初一120道计算题难度适中,纯计算题出题120道,

题目详情
初一120道计算题
难度适中,纯计算题
出题120道,
▼优质解答
答案和解析
1.1.25+3/4-5/12-3/8
2.-12×4-(-6)×5
3.-10+8÷(-2)³-4×(-2)
4.-9+5×(-6) -(-4)×2 ÷(-8)
5.-12009+4×(-3)2+(-6)÷(-2)
6.[(ab+3)(ab-3)-2a2b2+9]÷(ab)
7.(x+2)2-(x+1)(x-1)
8.(4x-3)-(5x-6)
9.(25x2+15x3y-20x4)÷(-5x2)
10.2a(a+b)-(a+b)2
11.(x-2)(x+2)
12.(-3a)³(2a-5ab)
13.(a-2b-3c)²
14.(x+2y-z)(x-2y-z)-(x+y-z)
15.-2²×3²-(-4)×2+3
16.(-1)²ºº¹-(-1)²ººº
17.(1/2-3/4-5/8)÷(-5/8)
18.(-6)×(-3)-(-5)×10
19.-2³+3×(-1)²ºº²-(-2)³
20.7÷(-7/12)×(1/2-1/3)
21.3/2×[3÷﹙-3/2﹚²-1³]
22.3X²-5x²
23.4x-2y+x+7y-1
24.2x-3y+5x+7y
25.-a²-a³-a³-a²
26.2a²b-4ab+3-5a²b-6
27.a²-3a+5+a²+2a-7
28.3xy-3yz-xy+2yz
29.3(a+b)-a-b-1/2(a+b)
30.3x²y-4x2y+5y²x
31.x²-x-4+2x-3x²
32.-3a³-a²+1/3a³+1/5a²-a
33.2xy-5x³-2xy+1.5x³-y³
34.5m²-4mn+3n-2m²+3mn-4n²
35.a²-a-4+2a-3a²(其中a=-2)
36.x²+xy=2,y²+xy=7.求x²+2xy+y²
37.a²-ab=3,b²+ab=2,求a²+b²
40.(4x²-5x+7)-(2x²-5x-1)(其中x=5)
41.A=4a²-3a,B=2a²+a-1.求A-B
42.-3=x-9
43.2x+5=3
44.3/4x+1=1/2
45.10x+7=14X-5-3X
46.2-0.3x=3-0.4x
47.3(x-3)+(2x-1)=1
48.1/6(3x-6)=2/5x-3
49.3x-[5-6(2-x)]=8
50.2(2x-3)-(5x-1)=1
51.(7x-5)/2=3/4
52.(2x-1)/6=(5x+1)/8
53.2/7(3y+7)=2-3y/2
54.x/0.2-x/0.5=3
55.6x-7=4x+5
56.3(x-1)+2(x+1)=-6
57.2(x+0.5-3(x-0.4)=5.2
58.(2x+1)/4=(4x-1)/3
59.(x-1)/2=4x/3+1
60.2/3(2x-1)-1/2(2x-1)=1/5