四年级下册数学 简便计算练习题·寒假学习

四年级下册数学 简便计算练习题·寒假学习


简介:
5.36+0.25+2.75 =5.36+(0.25+2.75) =5.36+3 =8.36 6.55-2.25-3.55 =6.55-3.55-2.25 =3-2.25 =0.75 3.5×9.9 =3.5×(10-0.1) =3.5×10-3.5×0.1 =35-0.35 =34.65 3.6×9.9+3.6×0.1 =3.6×(9.9+0.1) =3.6×10 =36