800÷25用简便方法计算怎么算 用简便方法计算。 14.82+8.46-5.46 (6.25+3.84)-(2.5+1.84) (
用简便方法计算。 14.82+8.46-5.46 (6.25+3.84)-(2.5+1.84) (
用简便方法计算。 14.82+8.46-5.46 (6.25+3.84)-(2.5+1.84) (
14.82+8.46-5.46
=14.82+(8.46-5.46)
=14.82+3
=17.82
(6.25+3.84)-(2.5+1.84)
=6.25+(3.84-1.84)-2.5
=6.25+2-2.5
=8.25-2.5
=5.75
(4.2+16.8)÷0.7
=21×10/7
=30
0.8÷0.32×4
=0.8×4÷0.32
=3.2÷0.32
=10
99.5-46.3
=(100-0.5)-46.3
=100-(0.5+46.3)
=100-46.8
=53.2
0.4×9.5×25÷1.9
=(0.4×25)×(9.5÷1.9)
=10×5
=50
13.2÷8.8×0.8
=13.2×(0.8÷8.8)
=13.2×1/11
=1.2
15.84-(9.9+5.84)
=15.84-5.84-9.9
=10-9.9
=0.1
计算,能用简便方法计算的用简便方法计算 32×125×2.5 94÷(6.25×10+3.75×10)
(1)32×125×2.5,=(125×8)×(4×2.5),
=1000×10,
=10000;
(2)94÷(6.25×10+3.75×10),
=94÷[10×(6.25+3.75)],
=94÷[10×10],
=94÷100,
=0.94.
用简便方法计算3.84乘101减3.84
=3.84×101-3.84×1
=3.84×(101-1)
=3.84×100
=384
6.25÷25x101-2.5用简便方法计算
6.25÷25x101-2.5=0.25x(100+1)-2.5=0.25x100+1x0.25-2.5=25+0.25-2.5=22.75
用简便方法计算3.84*187
用简便方法计算3.84*187
3.84*187
=3.84*200-3.84*13
=768-19.92
=718.08

34.82-(6.25+14.82)简便计算
34.82-(6.25+14.82)
=34.82-6.25-14.82
=34.82-14.82-6.25
=20-6.25
=13.75
6.25÷2·5x101-2.5用简便方法计算
6.25÷2·5x101-2.5用简便方法计算
6.25÷2·5x101-2.5
=2.5*101-2.5
=2.5*(101-1)
=2.5*100
=250
38.14 (5.46-8.14)用简便方法计算
38.14 +(5.46-8.14)用简便方法计算
38.14 +(5.46-8.14)
=38.14-8.14+5.46
=30+5.46
=35.46
9.78+5.46--3.78 用简便方法计算
9.78-3.78=6
6+5.46=11.46
4.7×54.6 47×5.46用简便方法计算
【速算】
4.7×54.6+ 47×5.46
=4.7×54.6+ 4.7×54.6
=9.4x54.6
=546-0.6x54.6
=546-32.76
=513+0.24
=513.24