题目内容
【题目】计算,能简算的要简算
1.75×4+3.25×4 0.375×0.8×2.5
3.2×6.5÷0.26 1.68×(12.6-8.7)
【答案】20 0.75 80 6.552
【解析】
1.75×4+3.25×4
=(1.75+3.25)×4
=5×4
=20
0.375×0.8×2.5
=0.375×(0.8×2.5)
=0.375×2
=0.75
3.2×6.5÷0.26
=20.8÷0.26
=80
1.68× (12.6-8.7)
=1.68×3.9
=6.552
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