Question

48ⅹ36+54ⅹ28用简便方法怎么算

Answer 1

48ⅹ36+54ⅹ28

把48变成28+20

=(28+20)x36+54ⅹ28

利用 (a+b)xc = axc +bxc

=28x36+20x36+54ⅹ28

抽出共同因子28

=28x(36+54) +20x36

计算 36+54 =90

=28x90 +20x36

化简

=2520+720

=3240

Answer 2

解原式=36×(48+6×7)
=36×(48+42)
=36×90=3240