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125 40 x8简便计算

125-40=8585=80+580*8=6405*8=40640+40=680 口算加心算

(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

简便计算:(125十40)x8,脱式: (125十40)x8 =125x8+40x8 =1000+320 =1320

解:(125一40)X8 =125X8一40X8 =1000一320 =680

原式=125*8*40 =1000*40 =40000

原式=125*8-40*8=1000-320=680

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

(125-40)*8=125*8-40*8=1000-320=680

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