Question

脱式计算42.3乘101-42.3简算？

Answer 1

101-1=100凑成整百
典型的乘法分配律
提取公因数42.3
42.3×101-42.3
=42.3×(101-1)
=42.3×100
=4230

Answer 2

42x[(101－3)÷14]的脘脱式怎么计？算

Answer 3

42.3×101-42.3
=42.3×(101-1)
=42.3×100
=4230
以上为简便计算过程。