2. 36 83
26 51
61 92
3. 76-40=26 58-4=54 49-3=46
66-20=46 68-30=38 86-30=56
4. 25 15 55 52
79 76 36 56
5. < >
< =
6. 40+55=95 本
7. 36-20=16 个
8. 20 21
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