Question

Tính nhanh 12,5:0,25+36,4:0,25-18,9×4

Answer 1

= 12,5 x 4 + 36,4 x 4 - 18,9 x 4

= 4 x (12,5 + 36,4 - 18,9)

= 4 x 30

= 120

Answer 2

`12,5:0,25+36,4:0,25-18,9xx4`

`=12,5xx4+36,4xx4-18,9xx4`

`=(12,5+36,4-18,9)xx4`

`=30xx4=120`

Answer 3

120

Answer 4

Answer 5

`= 12,5 xx 4 + 36,4 xx 4 - 18,9 xx 4`

`= 4 xx (12,5 + 36,4 - 18,9)`

`= 4 xx 30`

`= 120`

Answer 6

 

120

Answer 7

12,5÷0,25+36,4÷0,25-18,9×4

=12,5×4+36,4×4-18,9×4

=(12,5+36,4-18,9)×4

=30×4

=120