加倍与一半
|
14 |
24 |
34 |
44 |
|
|
加倍: |
□ |
□ |
□ |
□ |
|
100 |
98 |
96 |
94 |
|
|
一半: |
□ |
□ |
□ |
□ |
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|
(1)____ -37=30 |
(2)____ -12=75 |
|
______ -37=40 |
______ -12=64 |
|
______ -37=50 |
______ -12=53 |
|
______ -37=60 |
______ -12=42 |
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|
(1)99 -____=66 |
(2)88 -______=44 |
|
88-____=66 |
88-______=33 |
|
77-____=66 |
88-______=22 |
|
66-____=66 |
88-______=11 |