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初中数学初一年级数学计算题经典练习

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?11??1.5?1.4?4.3?5.2?3.6 ??6?????

????0.5?11??1?3?6?????24??

?3?????5????1?0.2?3??5?????2???

?34??????2?2????1?2??1?? ??4?2??

?112???11??0.3?33?3?????2?

?32??2.5?7.3?2.5?(?2.4)?2.5?(?1.7)?|?5|????12???5??1???2?3?1????????3??

-9+5×(-6) -(-4)2÷(-8) 4?6x?2x?12?3

x?12?3x)―15―(―0.25) ??1 15+(―1423

941111(?81)???(?32) —48 × (???)

49436612

3?5????4?2???????? (2m+2)×4m ?2

?4?8??

(2x+y)-(2x-y)

2

2

(

143222

xy)·(-12xy)÷(-xy) 33

[(3x+2y)(3x-2y)-(x+2y)(3x-2y)]÷3x

先化简后求值:m(m-3)-(m+3)(m-3),其中m=-4.

143232 2

4×(-3)-13+(- )-|-4| -3-[(-2)-(1-×)÷(-2)]

254

2x-19=7x+31

化简(求值)2(xy?xy)?2(xy?x)?2xy?2y的值,其中x??2,y?2

22223x?15x?7- = 1 461?21?16?(?)2?4?(?3) 5x2?6?3x3?x3?2x2?3

2

????先化简,再求值,已知a = 1,b = —的值

1?212?3323,求多项式?a?2b??2?ab?ab??2?ab?b?23??-2-(-3)×(-1)-(-1) -1-(1-0.5)×

234512×[2-(-3)] 332211+(-22)-3×(-11) (2)(?3)2?()2??6??293

3

初中数学初一年级数学计算题经典练习

?11??1.5?1.4?4.3?5.2?3.6??6?????????0.5?11??1?3?6?????24???3?????5????1?0.2?3??5?????2????34??????2
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