题目内容
简便运算.
÷100+
×
8÷0.25÷16
6
×6-6
×3
83×
+
×1887+43×
.
| 9 |
| 13 |
| 1 |
| 100 |
| 4 |
| 13 |
8÷0.25÷16
6
| 2 |
| 3 |
| 2 |
| 3 |
83×
| 1 |
| 2013 |
| 1 |
| 2013 |
| 1 |
| 2013 |
考点:运算定律与简便运算
专题:运算定律及简算
分析:(1)可将式中的除法算式变为乘法算式后,根据乘法分配律计算.
(2)可将式中的小数化成分数后计算.
(3)(4)可根据乘法分配律计算.
(2)可将式中的小数化成分数后计算.
(3)(4)可根据乘法分配律计算.
解答:
解:(1)
÷100+
×
=
×
+
×
=(
+
)×
=1×
=
;
(2)8÷0.25÷16
=8÷
÷16
=32÷16
=2;
(3)6
×6-6
×3
=(6-3)×6
=3×
=20;
(4)83×
+
×1887+43×
=(83+1887+43)×
=2013×
=1.
| 9 |
| 13 |
| 1 |
| 100 |
| 4 |
| 13 |
=
| 9 |
| 13 |
| 1 |
| 100 |
| 1 |
| 100 |
| 4 |
| 13 |
=(
| 9 |
| 13 |
| 4 |
| 13 |
| 1 |
| 100 |
=1×
| 1 |
| 100 |
=
| 1 |
| 100 |
(2)8÷0.25÷16
=8÷
| 1 |
| 4 |
=32÷16
=2;
(3)6
| 2 |
| 3 |
| 2 |
| 3 |
=(6-3)×6
| 2 |
| 3 |
=3×
| 20 |
| 3 |
=20;
(4)83×
| 1 |
| 2013 |
| 1 |
| 2013 |
| 1 |
| 2013 |
=(83+1887+43)×
| 1 |
| 2013 |
=2013×
| 1 |
| 2013 |
=1.
点评:完成本题要注意分析式中数据的特点,然后运用合适的方法计算.
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