2.4x1.02和12.5x0.96x0.8的简便计算求!

2.4x1.02和12.5x0.96x0.8的简便计算求!
2.4x1.02和12.5x0.96x0.8的简便计算求!

2.4x1.02和12.5x0.96x0.8的简便计算求!
2.4x1.02+12.5x0.96x0.8
=2.4x(1+0.02)+12.5x0.8x0.96
=2.4+0.48+10x0.96
=2.88+9.6
=2.88+(10-0.4)
=12.88-0.4
=12.48

2.4x1.02
=2.4x(1+0.02)
=2.4x1+(2.4x0.02)
=2.4+0.48
=2.88
12.5x0.96x0.8
=12.5x0.8x0.96
=10x0.96
=9.6