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125 40 x8简算方法

=125*840*8=1000320=680

(40+125)x8=40x8+125x8=320+1000=1320希望对你有帮助,满意请及时采纳,你的采纳是我回答的动力!

(125-40)x8 =125*8-40*8=1000-320=680 谢谢采纳

8*125=1000 5*40=200 200*1000=200000

125x(8x40)=125*40*8=1000*8=8000 运用乘法交换律和结合律

(125-40)x8=125x8-40x8=1000-320=680

125x25x(40+8)=125x25x40+125x25x8=125x(25x4x10)+(125x8)x25=125x1000+25x1000=(125+25)x1000=150x1000=150000

(125+40)x8=125x8+40x8=1000+320=1320

该题简便方法如下: (125-40)x8 =125x8-40x8 =1000-320 =680

9x8x125x(125-40)x8=9x1000x125x8-9x1000x40x8=9000x1000-9000x320=9000000-2880000=6120000

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