题目内容
看图计算.
(1)
+
=
(2)
+
=
(3)
+
=
(4)
+
=
.
(1)
| ( ) |
| ( ) |
| ( ) |
| ( ) |
| ( ) |
| ( ) |
(2)
| ( ) |
| ( ) |
| ( ) |
| ( ) |
| ( ) |
| ( ) |
(3)
| ( ) |
| ( ) |
| ( ) |
| ( ) |
| ( ) |
| ( ) |
(4)
| ( ) |
| ( ) |
| ( ) |
| ( ) |
| ( ) |
| ( ) |
分析:(1)左图表示
,右图表示
,然后再相加即可;
(2)左边是
,右边是
,然后再相加即可;
(3)左图表示
,右图表示
,然后再相加即可;
(4)左图表示
,右图表示
,然后再相加即可.
| 3 |
| 4 |
| 1 |
| 4 |
(2)左边是
| 4 |
| 8 |
| 4 |
| 8 |
(3)左图表示
| 3 |
| 8 |
| 2 |
| 8 |
(4)左图表示
| 5 |
| 5 |
| 2 |
| 5 |
解答:解:(1)
+
=1;
(2)
+
=1;
(3)
+
=
(4)
+
=
=1
.
| 3 |
| 4 |
| 1 |
| 4 |
(2)
| 4 |
| 8 |
| 4 |
| 8 |
(3)
| 3 |
| 8 |
| 2 |
| 8 |
| 5 |
| 8 |
(4)
| 5 |
| 5 |
| 2 |
| 5 |
| 7 |
| 5 |
| 2 |
| 5 |
点评:关键是分析好图表示的分数,然后再列式解答.
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