用简便方法计算.(1)36+59+41+5 (2)372×54+372×46 (3)1462-369-631 (4)3000...
答案:1 悬赏:10 手机版
解决时间 2021-03-31 11:04
- 提问者网友:王者佥
- 2021-03-30 12:40
用简便方法计算.(1)36+59+41+5 (2)372×54+372×46 (3)1462-369-631 (4)3000...
最佳答案
- 五星知识达人网友:神也偏爱
- 2021-03-30 13:17
(1)36+59+41+5
=(36+5)+(59+41)
=41+100
=141
(2)372×54+372×46
=372×(54+46)
=372×100
=37200
(3)1462-369-631
=1462-(369+631)
=1462-1000
=462
(4)3000÷125÷8
=3000÷(125×8)
=3000÷1000
=3
(5)48×125
=6×8×125
=6×(8×125)
=6×1000
=6000
(6)99×63+63
=(99+1)×63
=100×63
=6300
(7)78×102
=78×(100+2)
=78×100+78×2
=7800+156
=7956
(8)99×85
=(100-1)×85
=100×85-1×85
=8500-85
=8415
=(36+5)+(59+41)
=41+100
=141
(2)372×54+372×46
=372×(54+46)
=372×100
=37200
(3)1462-369-631
=1462-(369+631)
=1462-1000
=462
(4)3000÷125÷8
=3000÷(125×8)
=3000÷1000
=3
(5)48×125
=6×8×125
=6×(8×125)
=6×1000
=6000
(6)99×63+63
=(99+1)×63
=100×63
=6300
(7)78×102
=78×(100+2)
=78×100+78×2
=7800+156
=7956
(8)99×85
=(100-1)×85
=100×85-1×85
=8500-85
=8415
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