24×125简便运算怎么运算
24×125简便运算怎么运算
24×125
=125×8×3
=1000×3
=3000
简便运算1.8*1.96怎么运算
1.8x1.96
=1.8x(2-0.04)
=1.8x2-1.8x0.04
=3.6-0.072
=3.528
4.1÷1.25怎么简便运算 4.9÷3.5怎么简便运算 (火速!谢谢。)
4.1除以10/8即4.1*0.8=3.28
4.9除以7/2即4.9*2/7=0.7*2=1.4
怎么简便运算
20.5-(3.64+2.8)÷0.4
=20.5-(3.64÷0.4+2.8÷0.4)
=20.5-(9.1+7)
=20.5-16.1
=4.4
7.51×0.25×0.4
=7.51×(0.25×0.4)
=7.51×0.1
=0.751
÷怎么简便运算
(1)38×29+38 (2)39×101 (3)378+527+73+122
=38×29+38×1 =39×(100+1) =(378+122)+(527+73)
=38×(29+1) =39×100+39×1 =500+600
=38×30 =3900+39 =1100
=1140 =3939
(4) 72×125 (5)25×78×4 (6)45×98
=125×8×9 =25×4×78 =45×(100-2)
=1000×9 =100×78 =45×100-45×90
=9000 =7800 =4500-90
=4410
(7)25×32×125 (8)1456-387-613
=(25×4)×(8×125) =1456-(387+613)
=100×1000 =1456-1000
=100000 =456
(9)345×101-345 (10)154×89-54×89
=345×101-345×1 =89×(154-54)
=345×(101-1) =89×100
=345×100 =8900
=34500
-×怎么简便运算
- 解析:
根本不清楚要表达什么
-x就是求x的相反数
680×56+440×68怎么简便运算? 999×222+333×334怎么简便运算? 急~~~~
680×56+440×68
=68×560+440×68
=68×(560+440)
=68×1000
=68000
999×222+333×334
=333×3×222+333×334
=333×666+333×334
=333×(666+334)
=333×1000
=333000
3.2*98的简便运算怎么简便怎么算
3.2×98
=3.2×(100-2)
=3.2×100-3.2×2
=320-6.4
=313.6
求采纳谢谢~
2.254.877.50.48 简便运算怎么算
2.25x4.8+77.5x0.48 简便运算
=2.25x4.8+7.75x4.8
=(2.25+7.75)x4.8
=10x4.8
=48