题目内容
计算
2.4-0.32÷1.6
÷
×
(
+
)÷
+
.
2.4-0.32÷1.6
| 7 |
| 10 |
| 7 |
| 8 |
| 5 |
| 8 |
(
| 3 |
| 4 |
| 1 |
| 3 |
| 7 |
| 3 |
| 7 |
| 10 |
考点:分数的四则混合运算,小数四则混合运算
专题:运算顺序及法则
分析:(1)2.4-0.32÷1.6,先算除法,再算减法;
(2)
÷
×
,把除数转化为乘它的倒数,再根据分数乘法的计算法则计算;
(3)(
+
)÷
+
.先算括号里面的加法,再算除法,把除数转化为乘它的倒数最后数加法.
(2)
| 7 |
| 10 |
| 7 |
| 8 |
| 5 |
| 8 |
(3)(
| 3 |
| 4 |
| 1 |
| 3 |
| 7 |
| 3 |
| 7 |
| 10 |
解答:
解:(1)2.4-0.32÷1.6
=2.4-0.2
=2.2;
(2)
÷
×
=
×
×
=
;
(3)(
+
)÷
+
×
+
=
+
=
+
=1
.
=2.4-0.2
=2.2;
(2)
| 7 |
| 10 |
| 7 |
| 8 |
| 5 |
| 8 |
=
| 7 |
| 10 |
| 8 |
| 7 |
| 5 |
| 8 |
=
| 1 |
| 2 |
(3)(
| 3 |
| 4 |
| 1 |
| 3 |
| 7 |
| 3 |
| 7 |
| 10 |
| 13 |
| 12 |
| 3 |
| 7 |
| 7 |
| 10 |
=
| 13 |
| 28 |
| 7 |
| 10 |
=
| 65 |
| 140 |
| 98 |
| 140 |
=1
| 23 |
| 140 |
点评:此题考查的目的是理解掌握小数、分数四则混合运算的顺序以及它们的计算法则,并且能够正确熟练地进行计算.
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