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数学
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9.8*62.5*1.25—12.5*0.625*18
人气:427 ℃ 时间:2020-01-26 05:29:40
解答
98*0.625*12.5-12.5*0.625*18
=12.5*0.625*(98-18)
=12.5*5/8*80
=12.5*50
=625
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简便运算:9.8*62.5*1.25-12.5*0.625*18
六年级简便计算9.8*65.2*1.25-12.5*0.625*18
计算(1)9.8*65.2*1.25-12.5*0.625*18 (2)
0.625×0.5+5/8+1/2×62.5%(全部简算)
巧算:2.2*0.4*1.25*2.6 1.625+2.625+3.625+…+80.625 5.5*6.6+6.6*7.7+7.7*8.8+8.8*9.9
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