Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 89 · 40 sums

The trick (Nikhilam Navatashcaramam Dashatah): Write how far each number is from the base (− if below, + if above). Left part: cross-add — one number plus the other’s difference. Right part: multiply the two differences; it must have as many digits as the base has zeros (carry the extra). One above and one below? The right part is negative: take 1 from the left part and write base − that amount.

1. 1.988 × 981 =
2. 2.9 × 6 =
3. 3.1036 × 1012 =
4. 4.8 × 9 =
5. 5.85 × 96 =
6. 6.89 × 96 =
7. 7.7 × 7 =
8. 8.9 × 9 =
9. 9.91 × 93 =
10. 10.88 × 87 =
11. 11.106 × 101 =
12. 12.11 × 12 =
13. 13.107 × 107 =
14. 14.12 × 14 =
15. 15.11 × 12 =
16. 16.86 × 90 =
17. 17.90 × 93 =
18. 18.96 × 87 =
19. 19.96 × 91 =
20. 20.9 × 6 =
21. 21.109 × 109 =
22. 22.89 × 94 =
23. 23.115 × 110 =
24. 24.12 × 9 =
25. 25.11 × 14 =
26. 26.981 × 961 =
27. 27.111 × 114 =
28. 28.12 × 9 =
29. 29.112 × 106 =
30. 30.106 × 94 =
31. 31.104 × 114 =
32. 32.102 × 105 =
33. 33.88 × 90 =
34. 34.1014 × 1013 =
35. 35.991 × 965 =
36. 36.91 × 97 =
37. 37.99 × 91 =
38. 38.114 × 96 =
39. 39.991 × 973 =
40. 40.7 × 7 =

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