题目内容
计算,能简算的要简算:
×
+
÷6; 15×(
-
÷37.5%); (
-
)÷
.
| 1 |
| 6 |
| 7 |
| 10 |
| 3 |
| 10 |
| 8 |
| 5 |
| 3 |
| 8 |
| 1 |
| 10 |
| 1 |
| 12 |
| 15 |
| 17 |
考点:整数、分数、小数、百分数四则混合运算
专题:运算顺序及法则
分析:(1)根据乘法分配律简算即可;
(2)首先计算小括号里面的除法和减法,然后再计算小括号外面的即可;
(3)首先计算小括号里面的,然后计算除法即可.
(2)首先计算小括号里面的除法和减法,然后再计算小括号外面的即可;
(3)首先计算小括号里面的,然后计算除法即可.
解答:
解:(1)
×
+
÷6
=
×
+
×
=
×(
+
)
=
×1
=
(2)15×(
-
÷37.5%)
=15×(
-
÷
)
=15×(
-1)
=15×
=9
(3)(
-
)÷
=
÷
=
| 1 |
| 6 |
| 7 |
| 10 |
| 3 |
| 10 |
=
| 1 |
| 6 |
| 7 |
| 10 |
| 3 |
| 10 |
| 1 |
| 6 |
=
| 1 |
| 6 |
| 7 |
| 10 |
| 3 |
| 10 |
=
| 1 |
| 6 |
=
| 1 |
| 6 |
(2)15×(
| 8 |
| 5 |
| 3 |
| 8 |
=15×(
| 8 |
| 5 |
| 3 |
| 8 |
| 3 |
| 8 |
=15×(
| 8 |
| 5 |
=15×
| 3 |
| 5 |
=9
(3)(
| 1 |
| 10 |
| 1 |
| 12 |
| 15 |
| 17 |
=
| 1 |
| 60 |
| 15 |
| 17 |
=
| 17 |
| 900 |
点评:此题主要考查了整数、分数、小数、百分数四则混合运算,注意运算顺序,注意乘法运算定律的应用.
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