Help me with this abacus questions (addition and subtraction)
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1. 436
2. 412
3. 232
4. 510
5. 56
6. 378
7. 190
8. 423
9. 148
10. 389
by the way I also know how to use abacus. In which level are you currently in
Answered by
0
Answer:
1.436
2.412
3.232
4.510
5.56
6.378
7.190
8.423
9.148
10.389
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