更新时间2018-05-03 16:56:56
551+482+118 986+999 24乘25 547-247-62-38 600-136-65-64 9+99+999+9999 37乘125乘3乘8
(125乘25)乘32 69乘25乘4 125乘72 28乘19+81乘19 (125+25)乘4 3000÷125÷8 960÷15÷3
5600÷(56乘25)
551+482+118
=551+(482+118)
=551+500
=1051
986+999
=986+(1000-1)
=986+1000-1
=1986-1
=1985
24乘25
=6×4×25
=6×100
=600
547-247-62-38
=(574-274)-(62+38)
=300-100
=200
600-136-65-64
=600-(136+64)-65
=600-200-65
=235
9+99+999+9999
=(10+100+1000+10000)-(1+1+1+1)
=11110-4
=11106
37乘125乘3乘8
=(37×3)×(125×8)
=111×1000
=111000
(125乘25)乘32
=125×25×4×8
=(125×8)×(25×4)
=1000×100
=100000
69乘25乘4
=69×(25×4)
=69×100
=6900
125乘72
=125×8×9
=1000×9
=9000
28乘19+81乘19
=(28+81)×(20-1)
=109×20-109
=2180-109
=2071
(125+25)乘4
=125×4+25×4
=500+100
=600
3000÷125÷8
=3000÷(125×8)
=3000÷1000
=3
960÷15÷3
=960÷3÷5÷3
=320÷5÷3
=64÷3
=21又1/3
5600÷(56乘25)
=5600÷56÷25
=100÷25
=4
把具体的各个相关的数字按照快捷的计算重新排列组合,应该达到要求。
列出公式理解快不