题目内容
直接写得数
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3
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(
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分析:运用分数加减乘除的运算方法以及运算定律计算即可.
解答:解:
+
=
;
-
=
;
×
=
;
×
=
;
×
÷
×
=
;
+
=
;
×0+3=3; 3
+1.75=5;
÷
=
; (
+
)×
=
.
| 2 |
| 5 |
| 1 |
| 2 |
| 9 |
| 10 |
| 5 |
| 6 |
| 1 |
| 2 |
| 1 |
| 3 |
| 6 |
| 7 |
| 7 |
| 15 |
| 2 |
| 5 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 64 |
| 4 |
| 5 |
| 1 |
| 4 |
| 4 |
| 5 |
| 1 |
| 4 |
| 1 |
| 16 |
| 1 |
| 4 |
| 1 |
| 5 |
| 9 |
| 20 |
| 2 |
| 3 |
| 1 |
| 4 |
| 3 |
| 5 |
| 1 |
| 3 |
| 9 |
| 5 |
| 5 |
| 6 |
| 1 |
| 6 |
| 3 |
| 4 |
| 3 |
| 4 |
点评:此题考查了通分、约分、四则混合运算的顺序,以及在运算中“0”和“1”的作用.
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