题目内容
【题目】脱式计算
(1)13.4+4.6×3.5
(2)0.64×7.2+0.64×2.8
(3)5.6÷0.28×0.4
(4)(4.8﹣3.5)÷2.5
【答案】29.5;6.4;8;0.52
【解析】
(1)13.4+4.6×3.5
=13.4+16.1
=29.5
(2)0.64×7.2+0.64×2.8
=0.64×(7.2+2.8)
=0.64×10
=6.4
(3)5.6÷0.28×0.4
=20×0.4
=8
(4)(4.8﹣3.5)÷2.5
=1.3÷2.5
=0.52
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