题目内容
【题目】计算:
17.5+(3.75÷2.5)-6.4
18.3÷6.1+2.4×1.8
9.2+15.3×0.25-4.8×1.5
6.51+(4.23-1.78)÷0.5.
【答案】12.6;7.32;5.825;11.41
【解析】
17.5+(3.75÷2.5)-6.4
=17.5+1.5-6.4
=12.6
18.3÷6.1+2.4×1.8
=3+4.32
=7.32
9.2+15.3×0.25-4.8×1.5
=9.2+3.825-7.2
=13.025-7.2
=5.825
6.51+(4.23-1.78)÷0.5
=6.51+2.45÷0.5
=6.51+4.9
=11.41
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