题目内容

【题目】用自己喜欢的方法计算。

16.75+2.98-1.75 21.25×9.4+2.7

38.95×99+8.95 45.7×3.8+4.3×3.8

【答案】17.98;(214.45

3895;(438

【解析】

16.75+2.98-1.75

=6.75-1.75+2.98

=5+2.98

=7.98

21.25×9.4+2.7

=11.75+2.7

=14.45

38.95×99+8.95

=8.95×99+8.95×1

=8.95×99+1

=8.95×100

=895

45.7×3.8+4.3×3.8

=5.7+4.3×3.8

=10×3.8

=38

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