题目内容
(2013?南通模拟)
| 脱式计算. 6÷13+8×2 |
35÷
|
|
分析:(1)先算除法和乘法,再算加法;
(2)先算除法,再算乘法,最后算减法;
(3)先算除法,再算加法,最后算乘法.
(2)先算除法,再算乘法,最后算减法;
(3)先算除法,再算加法,最后算乘法.
解答:解:(1)6÷13+8×2
=
+16
=16
;
(2)35÷
×1-
=40×1-
=40-
=39
;
(3)
×(
÷
+
)
=
×(
+
)
=
×
=
.
=
| 6 |
| 13 |
=16
| 6 |
| 13 |
(2)35÷
| 7 |
| 8 |
| 2 |
| 7 |
=40×1-
| 2 |
| 7 |
=40-
| 2 |
| 7 |
=39
| 5 |
| 7 |
(3)
| 5 |
| 6 |
| 2 |
| 9 |
| 5 |
| 6 |
| 5 |
| 6 |
=
| 5 |
| 6 |
| 4 |
| 15 |
| 5 |
| 6 |
=
| 5 |
| 6 |
| 11 |
| 10 |
=
| 11 |
| 12 |
点评:考查了分数四则混合运算,注意运算顺序和运算法则,然后再进一步计算.
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