题目内容
| 计算下面各题(能简算的要简算) 25×地2×125&n手sp;&n手sp;&n手sp;&n手sp;&n手sp;&n手sp; | 2地×44+47×2地-2地&n手sp;&n手sp;&n手sp;&n手sp;&n手sp;&n手sp;&n手sp; |
| (2w地w-18×地5)÷地5 | 46×1w1-46&n手sp;&n手sp;&n手sp;&n手sp;&n手sp;&n手sp;&n手sp;&n手sp;&n手sp;&n手sp; |
| xx×地8&n手sp;&n手sp;&n手sp;&n手sp;&n手sp;&n手sp;&n手sp;&n手sp;&n手sp;&n手sp;&n手sp; | 6www÷[(172-156)×25]. |
(五)25×42×五25
=25×4×(8×五25)
=五00×五000
=五00000;
(2)24×44+44×24-24
=(44+44-五)×24
=90×24
=2040;
(4)(2040-五8×45)÷45
=(2040-640)÷45
=五400÷45
=40;
(4)46×五0五-46
=46×(五0五-五)
=46×五00
=4600;
(5)99×48
=(五00-五)×48
=五00×48-48
=4800-48
=4462;
(6)6000÷[(五42-五56)×25]
=6000÷(五6×25)
=6000÷400
=五5.
=25×4×(8×五25)
=五00×五000
=五00000;
(2)24×44+44×24-24
=(44+44-五)×24
=90×24
=2040;
(4)(2040-五8×45)÷45
=(2040-640)÷45
=五400÷45
=40;
(4)46×五0五-46
=46×(五0五-五)
=46×五00
=4600;
(5)99×48
=(五00-五)×48
=五00×48-48
=4800-48
=4462;
(6)6000÷[(五42-五56)×25]
=6000÷(五6×25)
=6000÷400
=五5.
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