54.9×0.38= 4.05+37.85= 1.25×0.7×0.8= 9.8×25= 2.96
54.9×0.38= 4.05+37.85= 1.25×0.7×0.8= 9.8×25= 2.96
54.9×0.38 4.05×37.85 1.25×0.7×0.8
1,54.9×0.38简算 2,9.8 ×25简算?3,4.05+37.85简算?
54.9*0.38= 4.05+37.85= 2.96*40= 简便方法计算,
1、54.9x0.38 2、9.8x25 3、4.05+37.85 4、1.25x0.7x0.8
54.9*0.38和4.05+37.85用简便方法
0.45乘2.50.45×2.5= 0.8×1.25= 0.3×3.6= 0.3×0.3= 10×0.07= 0.3×1
=
=?
(1.25+2.5)×16 = 1.25×3.7×0.8= 3.4×9+3.4= 9.24×9+3.4= 简算
16 :20=( )分之8=0.8=( )÷15= 25分之20
4.56÷0.38=( )(竖式)