题目内容

【题目】下面各题怎样简便就怎样算。

45×17+55×17    25×66×4    102×35     88×125

53.76-5.71-4.29      3.7+7.83+6.3      236-(136+28)

【答案】45×17+55×17

=(45+55)×17

=100×17

=1700   

25×66×4

=25×4×66

=100×66

=6600

102×35

=(100+2)×35

=100×35+2×35

=3500+70

=3570

88×125

=11×(8×125)

=11×1000

=11000

53.76-5.71-4.29

=53.76-(5.71+4.29)

=53.76-10

=43.76  

3.7+7.83+6.3

=3.7+6.3+7.83

=10+7.83

=17.83

236-(136+28)

=236-136-28

=100-28

=72

【解析】

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