Question

1.764除以4的商加上0.15除以15的商,和是多少?2.1.2与0.8的差乘2.5,再加上4,所得的和除以0.5得多

Answer 1

1、

(1.764÷4)+(0.15÷15)

=0.441+0.01

= 0.451

2、

[(1.2-0.8)x2.5+4]÷0.5

=(0.4x2.5+4)÷0.5

= (1+4)÷0.5

=5÷0.5

=10