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1500×120÷25和4分之3×101-0.75怎么简算(写计算步骤)
人气:168 ℃ 时间:2020-04-14 07:56:56
解答
1500×120÷25
=1500×120÷100×4
=(1500÷100×4)×120
=60×12
=720
3×101-0.75
=3×(100+1)-0.75
=3×100+3-0.75
=300+2.25
=302.25
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