题目内容
解比例.
(1)X:0.3=
(2)
=1.5
(3)
:
=
:X
(4)X:3.5=1.4:5.6.
(1)X:0.3=
| 2 |
| 7 |
(2)
| X |
| 22.4 |
(3)
| 9 |
| 10 |
| 3 |
| 4 |
| 3 |
| 5 |
(4)X:3.5=1.4:5.6.
(1)x:0.3=
,
7x=0.3×2,
7x÷7=0.6÷7,
x=
;
(2))
=1.5,
x=22.4×1.5,
x=33.6;
(3)
:
=
:x,
x=
×
,
x×
=
×
,
x=
;
(4)x:3.5=1.4:5.6,
5.6x=3.5×1.4,
5.6x÷5.6=4.9÷5.6,
x=0.875.
| 2 |
| 7 |
7x=0.3×2,
7x÷7=0.6÷7,
x=
| 3 |
| 35 |
(2))
| X |
| 22.4 |
x=22.4×1.5,
x=33.6;
(3)
| 9 |
| 10 |
| 3 |
| 4 |
| 3 |
| 5 |
| 9 |
| 10 |
| 3 |
| 4 |
| 3 |
| 5 |
| 9 |
| 10 |
| 10 |
| 9 |
| 9 |
| 20 |
| 10 |
| 9 |
x=
| 1 |
| 2 |
(4)x:3.5=1.4:5.6,
5.6x=3.5×1.4,
5.6x÷5.6=4.9÷5.6,
x=0.875.
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