题目内容
（2012?石渠县模拟）口算．4+
=
×
=
4.5÷
=
×2.4=
÷7=
-
=
+
=
×
=
．
| 1 |
| 5 |
4
| 1 |
| 5 |
4
| 1 |
| 5 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 15 |
| 1 |
| 15 |
| 1 |
| 2 |
9
9
| 7 |
| 12 |
1.4
1.4
| 4 |
| 5 |
| 4 |
| 35 |
| 4 |
| 35 |
| 1 |
| 3 |
| 1 |
| 5 |
| 2 |
| 15 |
| 2 |
| 15 |
| 1 |
| 2 |
| 1 |
| 7 |
| 9 |
| 14 |
| 9 |
| 14 |
| 9 |
| 10 |
| 2 |
| 3 |
| 3 |
| 5 |
| 3 |
| 5 |
分析：根据分数的加减乘除计算法则进行计算即可．
解答：口算．4+
=4
×
=
4.5÷
=9
×2.4=1.4
÷7=
-
=
+
=
×
=
．
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 15 |
| 1 |
| 2 |
| 7 |
| 12 |
| 4 |
| 5 |
| 4 |
| 35 |
| 1 |
| 3 |
| 1 |
| 5 |
| 2 |
| 15 |
| 1 |
| 2 |
| 1 |
| 7 |
| 9 |
| 14 |
| 9 |
| 10 |
| 2 |
| 3 |
| 3 |
| 5 |
点评：此题主要考查分数的加减乘除的计算法则．
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