Question

3.8×99+3.8用简便方法计算~

3.8×99+3.8

Answer 1

3.8×99+3.8
=3.8×99+3.8×1
=3.8×（99+1）
=3.8×100
=380

Answer 2

3.8×99+3.8
=3.8×(99+1)
=3.8×100
=380

Answer 3

3.8（99+1）=3.8X100=380

Answer 4

3.8*(99+1)=380
合并同类项

Answer 5

3.4×99+3.8×1＝3.8×＜99+1＞＝3.8×100＝380