题目内容
| 怎样简便就怎样计算 101×39 | 4×60×50×8 | 35×8+35×6-4×35 |
| 89.6-5.22-4.78 | 3.25-(0.86+0.25) | 1.31+4.6+0.69+3.4 |
(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.
=(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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