Multiplication Shortcuts Worksheet #2 (Math Lair)

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You may want to see calculation shortcuts before doing this worksheet.

Solve the following problems without using your calculator:

1. 12 × 12 2. 100 × 32 3. 128 × 64
4. 99 × 101 5. 81 × 81 6. 329 × 5
7. 143,201 × 2 8. 83 × 11 9. 71 × 69
10. 3,012 × 3 11. 88 × 81 12. 36 × 6
13. 90 × 48 14. 79 × 46 15. 144 × 3
16. 61 × 72 17. 46 × 61 18. 98 × 80
19. 79 × 92 20. 29 × 91 21. 77 × 65

1. 12 × 12	2. 100 × 32	3. 128 × 64
4. 99 × 101	5. 81 × 81	6. 329 × 5
7. 143,201 × 2	8. 83 × 11	9. 71 × 69
10. 3,012 × 3	11. 88 × 81	12. 36 × 6
13. 90 × 48	14. 79 × 46	15. 144 × 3
16. 61 × 72	17. 46 × 61	18. 98 × 80
19. 79 × 92	20. 29 × 91	21. 77 × 65