Question

2.4×64+1.2×72怎样用简便方法计算

Answer 1

2.4×64+1.2×72怎样用简便方法计算
=2.4x64+2.4x36
=2.4x（64+36）
=2.4x100
=240

Answer 2

原式=1.2✘128+1.2✘72=1.2✘（128+72）=1.2✘200=240