3.3乘以6.7

史都砍17026.7+3.3乘1.2的简便计算 -
汤古维19447636819 ______ 已经是最简了,6.7+3.3=1010x1.2=12

史都砍17026.7加3.3乘1.2的简便运算 -
汤古维19447636819 ______ 原式=6.7+3.3x1.2=6.7+3x1.2+0.3x1.2=6.7+3.6+0.36=6.7+3.3+0.3+0.36=10+0.66=10.66 供参考.

史都砍1702六点七乘以60%.加三点三,乘以60%怎么算? -
汤古维19447636819 ______ 简便计算 6.7*60%+3.3*60% =(6.7+3.3)*60% =10*60% =6

史都砍17023.3乘9.75加67乘0.975简便方法 -
汤古维19447636819 ______ 3.3乘9.75加67乘0.975=3.3乘9.75加6.7乘9.75=(3.3加6.7)乘9.75=10乘9.75=97.5

史都砍17023.3乘8.7加6.7乘8.7加0.87的简便运算法 -
汤古维19447636819 ______ 3.3*8.7+6.7*8.7+0.87 =3.3*8.7+6.7*8.7+8.7*0.1 =﹙3.3+6.7+0.1﹚*8.7 =10.1*8.7 =10*8.7+0.1*8.7 =87+0.87 =87.87

史都砍17026.7乘0.96 9.6乘0.33拖试计算 -
汤古维19447636819 ______ 6.7乘0.96 + 9.6乘0.33= 6.7乘0.96 + 0.96乘3.3=(6.7+3.3)乘0.96 = 10 乘0.96 = 9.6

史都砍17026.7乘3.2的验算怎么验 -
汤古维19447636819 ______ 6.7X3.2=21.44验算就用21.44÷3.2=6.7或者21.44÷6.7=3.2

史都砍17026.7乘0.6乘3.3的简便方法 -
汤古维19447636819 ______ 6.7*0.6*3.3=(7-0.3)*1.98=(7-0.3)*(2-0.02)=14-0.6-0.14+0.006=14.006-0.74=13.266

史都砍17024.2乘3.5加7.6*x等于18.5 -
汤古维19447636819 ______ 解:列式子:4.2*3.5+7.6X=18.514.7+7.6X=18.57.6X=18.5-14.77.6X=3.8X=1/2

史都砍17026.7乘2.5加9.9乘7.5加3.2乘2.5 -
汤古维19447636819 ______ 6.7x2.5+9.9x7.5+3.2x2.5=6.7x2.5+(9.9x3)x2.5+3.2x2.5=(6.7+29.7+3.2)x2.5=39.6x2.5=99