问题 解答题

用你喜欢的方法计算.

10.64+7.65×2.4+11.76;10.5÷(5.2-3.2); 15.52-4.3-5.7;(6.1-4.6)÷0.8-1.

答案

(1)10.64+7.65×2.4+11.76

=10.64+18.36+11.76

=29+11.76

=40.76;

(2)10.5÷(5.2-3.2)

=10.5÷2

=5.25;

(3)15.52-4.3-5.7

=15.52-(4.3+5.7)

=15.52-10

=5.52;

(4)(6.1-4.6)÷0.8-1

=1.5÷0.8-1

=1.875-1

=0.875.

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