问题 解答题
怎样简便就怎样计算
101×39
4×60×50×835×8+35×6-4×35
89.6-5.22-4.783.25-(0.86+0.25)1.31+4.6+0.69+3.4
答案

(1)101×39

=(100+1)×39

=100×39+1×39

=3900+39

=3939;

(2)4×60×50×8

=(4×60)×(50×8)

=240×400

=96000;

(3)35×8+35×6-4×35

=35×(8+6-4)

=35×10

=350;

(4)89.6-5.22-4.78

=89.6-(5.22+4.78)

=89.6-10

=79.6;

(5)3.25-(0.86+0.25)

=3.25-0.86-0.25

=3.25-0.25-0.86

=3-0.86

=2.14;

(6)1.31+4.6+0.69+3.4

=(1.31+0.69)+(4.6+3.4)

=2+8

=10.

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