题目内容
甲数是乙数的
,取出甲数的
给乙数后,两数相等.
| 9 |
| 5 |
| 2 |
| 9 |
| 2 |
| 9 |
分析:把乙数看作单位“1”,甲、乙数两数的和是1+
=
,两数的平均数是
÷2=
,即甲数给乙数(
-
)÷
=
后两数相等.
| 9 |
| 5 |
| 14 |
| 5 |
| 14 |
| 5 |
| 7 |
| 5 |
| 9 |
| 5 |
| 7 |
| 5 |
| 9 |
| 5 |
| 2 |
| 9 |
解答:解:[
-(1+
)÷2]÷
,
=[
-
÷2]÷
,
=[
-
]÷
,
=
÷
,
=
;
故答案为:
.
| 9 |
| 5 |
| 9 |
| 5 |
| 9 |
| 5 |
=[
| 9 |
| 5 |
| 14 |
| 5 |
| 9 |
| 5 |
=[
| 9 |
| 5 |
| 7 |
| 5 |
| 9 |
| 5 |
=
| 2 |
| 5 |
| 9 |
| 5 |
=
| 2 |
| 9 |
故答案为:
| 2 |
| 9 |
点评:将乙数看作单位“1”,根据分数减法和除法的意义进行分析是完成本题的关键.
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