题目内容
直接写出得数.
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| 1.5×0.4= | 10÷2.5= | 2.4×5= | 0.78÷1.3= |
分析:第一行是分数的加减法,先通分,再相加减;第二行是分数的乘除法,除法先变成乘法再计算;第三行是小数的乘除法,计算时要注意小数点的位置.
解答:解:
+
=
,
-
=
,
+
=
,
+
=
,
×
=
,
×
=
,
÷
=1,
÷
=
,
1.5×0.4=0.6,10÷2.5=4,2.4×5=12,0.78÷1.3=0.6.
故答案为:
,
,
,
,
,
,1,
,0.6,4,12,0.6.
| 1 |
| 3 |
| 2 |
| 5 |
| 11 |
| 15 |
| 2 |
| 3 |
| 2 |
| 5 |
| 4 |
| 15 |
| 3 |
| 4 |
| 3 |
| 8 |
| 9 |
| 8 |
| 1 |
| 2 |
| 1 |
| 6 |
| 2 |
| 3 |
| 3 |
| 5 |
| 7 |
| 9 |
| 7 |
| 15 |
| 12 |
| 7 |
| 14 |
| 15 |
| 8 |
| 5 |
| 4 |
| 7 |
| 8 |
| 14 |
| 5 |
| 9 |
| 5 |
| 6 |
| 2 |
| 3 |
1.5×0.4=0.6,10÷2.5=4,2.4×5=12,0.78÷1.3=0.6.
故答案为:
| 11 |
| 15 |
| 4 |
| 15 |
| 9 |
| 8 |
| 2 |
| 3 |
| 7 |
| 15 |
| 8 |
| 5 |
| 2 |
| 3 |
点评:本题考查了基本的计算,计算时要细心,把结果化成最简分数.
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