Question

用简便方法计算下列各题47*99

用简便方法计算下面两题 47/99乘以97 简便方法计算 1/5乘以27加3/5乘于41
用简便方法计算下面两题
47/99乘以97 简便方法计算
1/5乘以27加3/5乘于41 简便方法计算

Answer 1

(1)
=47/99×99-47/99×2
=47-94/99
=46又99分之5
(2)
=1/5×27+1/5×(3×41)
=1/5×(27+123)
=1/5×150
=30