Question

五点六乘以五三八减去三八乘以零点五六能简便计算吗

Answer 1

五点六乘以五三点八减去三八乘以零点五六能简便计算吗???

5.6x53.8-38x0.56
=5.6x53.8-(38÷10)x0.56x10
=5.6x53.8-3.8x5.6
=5.6x(53.8-3.8)
=5.6x50
=280