题目内容
解比例.
①
=
②0.75:
=12:x ③
:
=x:
④4:4.5=
⑤
:
=x:9 ⑥6.5:x=3.25:4.
①
| 0.7 |
| x |
| 14 |
| 5 |
| 1 |
| 2 |
| 2 |
| 15 |
| 1 |
| 6 |
| 2 |
| 3 |
④4:4.5=
| x |
| 27 |
| 2 |
| 3 |
| 5 |
| 6 |
①
=
,
14x=0.7×5,
14x÷14=3.5÷4,
x=0.25;
②0.75:
=12:x,
0.75x=
×12,
0.75x÷0.75=6÷0.75,
x=8;
③
:
=x:
,
x=
×
,
x÷
=
÷
,
x=
;
④4:4.5=
,
4.5×
=4,
x÷
=4÷
,
x=24;
⑤
:
=x:9,
x=
×9,
x÷
=6÷
,
x=
;
⑥6.5:x=3.25:4.
3.25x=6.5×4,
3.25x÷3.25=26÷3.25,
x=8.
| 0.7 |
| x |
| 14 |
| 5 |
14x=0.7×5,
14x÷14=3.5÷4,
x=0.25;
②0.75:
| 1 |
| 2 |
0.75x=
| 1 |
| 2 |
0.75x÷0.75=6÷0.75,
x=8;
③
| 2 |
| 15 |
| 1 |
| 6 |
| 2 |
| 3 |
| 1 |
| 6 |
| 2 |
| 15 |
| 2 |
| 3 |
| 1 |
| 6 |
| 1 |
| 6 |
| 4 |
| 45 |
| 1 |
| 6 |
x=
| 8 |
| 15 |
④4:4.5=
| x |
| 27 |
4.5×
| x |
| 27 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 6 |
x=24;
⑤
| 2 |
| 3 |
| 5 |
| 6 |
| 5 |
| 6 |
| 2 |
| 3 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
x=
| 36 |
| 5 |
⑥6.5:x=3.25:4.
3.25x=6.5×4,
3.25x÷3.25=26÷3.25,
x=8.
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