问题 解答题

计算下列各题(能简算的要简算):

4.32÷2.4×1.7;

16.2×4.5+3.8×4.5;

9.05-3.86-3.14;

7.28+0.72÷0.9.

答案

(1)4.32÷2.4×1.7,

=1.8×1.7,

=3.06;

(2)16.2×4.5+3.8×4.5,

=(16.2+3.8)×4.5,

=20×4.5,

=90;

(3)9.05-3.86-3.14,

=9.05-(3.86+3.14),

=9.05-7,

=2.05;

(4)7.28+0.72÷0.9,

=7.28+0.8,

=8.08.

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