题目内容
甲、乙的和是300,甲数的
比乙数的
多55,甲数是( )
| 2 |
| 5 |
| 1 |
| 4 |
| A.100 | B.200 | C.300 | D.400 |
甲数为:
[300-55×(
÷
÷
)]÷
,
=[300-55×4]÷
,
=[300-220]÷
,
=80×
,
=200;
答:甲数是200.
故选:B.
[300-55×(
| 2 |
| 5 |
| 1 |
| 4 |
| 2 |
| 5 |
| 2 |
| 5 |
=[300-55×4]÷
| 2 |
| 5 |
=[300-220]÷
| 2 |
| 5 |
=80×
| 5 |
| 2 |
=200;
答:甲数是200.
故选:B.
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