用简便方法计算4.2*17+1.7*56+3.4
来源:学生学帮网 编辑:学帮网 时间:2024/06/01 16:27:03
用简便方法计算4.2*17+1.7*56+3.4
4.2*17+1.7*56+3.4
=42×1.7+1.7×56+1.7×2
=1.7×(42+56+2)
=1.7×100
=170
用简便方法计算4.2*17+1.7*56+3.4
4.2*17+1.7*56+3.4
=42×1.7+1.7×56+1.7×2
=1.7×(42+56+2)
=1.7×100
=170