问题 解答题
这样简便就怎么算
27÷0.35×1.319-18.9÷1.4125×408
0.25×1.25×320.4×98+0.8 12.5×1.7+8.3×12.5.
答案

(1)27÷0.35×1.3

=

540
7
×1.3

=

702
7

(2)19-18.9÷1.4

=19-13.5

=5.5

(3)125×408

=125×(400+8)

=125×400+125×8

=50000+1000

=51000

(4)0.25×1.25×32

=(0.25×4)×(1.25×8)

=1×10

=10

(5)0.4×98+0.8

=0.4×98+0.4×2

=0.4×(98+2)

=0.4×100

=40

(6)12.5×1.7+12.5×8.3

=12.5×(1.7+8.3)

=12.5×10

=125

单项选择题
单项选择题