题目内容
计算:(12
×3
-4
×4
)÷(4
×2
).
| 4 |
| 5 |
| 3 |
| 4 |
| 4 |
| 11 |
| 1 |
| 8 |
| 5 |
| 7 |
| 1 |
| 3 |
分析:先计算括号里面的,再计算括号外面的除法.
解答:解:(12
×3
-4
×4
)÷(4
×2
),
=(
×
-
×
)÷(
×
)
=(48-18)÷11,
=30÷11,
=
.
| 4 |
| 5 |
| 3 |
| 4 |
| 4 |
| 11 |
| 1 |
| 8 |
| 5 |
| 7 |
| 1 |
| 3 |
=(
| 64 |
| 5 |
| 15 |
| 4 |
| 48 |
| 11 |
| 33 |
| 8. |
| 33 |
| 7 |
| 7 |
| 3 |
=(48-18)÷11,
=30÷11,
=
| 30 |
| 11 |
点评:考查了四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算律简便计算.
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