Question

九又五分之四乘以十分之三加上五分之一再乘0.3的简便计算方法？

Answer 1

九又五分之四乘以十分之三加上五分之一再乘0.3
=（9+4/5）×3/10+1/5

Answer 2

9又4/5x3/10+1/5ⅹ0.3
=9又4/5x3/10+1/5ⅹ3/10
=3/10x(9又4/5+1/5)
=3/10x10
=3。