题目内容
(1)
| (2)
| ||||||||||
(3)
| (4)x:20%=2:
|
(1)
x=:
×
,
x=
,
x÷
=
÷
,
x=
;
(2)
=
,
2.5x=2.4×15,
2.5x÷2.5=36÷2.5,
x=14.4;
(3)
:x=15:
,
15x=
×
,
15x÷15=
×
÷15,
x=
;
(4)x:20%=2:
.
x÷
=0.4÷
,
x=1.6.
| 1 |
| 4 |
| 1 |
| 20 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 40 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 40 |
| 1 |
| 4 |
x=
| 1 |
| 10 |
(2)
| 2.4 |
| 2.5 |
| x |
| 15 |
2.5x=2.4×15,
2.5x÷2.5=36÷2.5,
x=14.4;
(3)
| 3 |
| 4 |
| 5 |
| 8 |
15x=
| 3 |
| 4 |
| 5 |
| 8 |
15x÷15=
| 3 |
| 4 |
| 5 |
| 8 |
x=
| 1 |
| 32 |
(4)x:20%=2:
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
x=1.6.
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