问题 解答题
脱式计算:能简算的要简算
100-36.6-63.40.25×13.7×0.432.7×28+7.3×28
1.83+85+98.17+150.98×1056.15×9.4-42.
答案

(1)100-36.6-63.4

=100-(36.6+63.4)

=100-100

=0

(2)0.25×13.7×0.4

=0.25×0.4×13.7

=0.1×13.7

=1.37

(3)32.7×28+7.3×28

=(32.7+7.3)×28

=40×28

=1120

(4)1.83+85+98.17+15

=(1.83+98.17)+(85+15)

=100+100

=200

(5)0.98×105

=0.98×(100+5)

=0.98×100+0.98×5

=98+4.9

=102.9

(6)6.15×9.4-42

=57.81-42

=15.81

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