1.23× 48+ 1.23× 65- 1.23× 13 18.6 ×0.125+ 13.4 ×八分之一
问题描述:
1.23× 48+ 1.23× 65- 1.23× 13 18.6 ×0.125+ 13.4 ×八分之一
答
1.23× 48+ 1.23× 65- 1.23× 13 =1.23x(48+65-13)=1.23x100=123
18.6 ×0.125+ 13.4 ×1/8=(18.6+13.4)x1/8=32x1/8=4