Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 674 · 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. 1.113 × 99 =
2. 2.102 × 103 =
3. 3.104 × 115 =
4. 4.96 × 90 =
5. 5.6 × 7 =
6. 6.90 × 88 =
7. 7.1011 × 1019 =
8. 8.968 × 969 =
9. 9.105 × 105 =
10. 10.1027 × 1002 =
11. 11.110 × 105 =
12. 12.88 × 91 =
13. 13.9 × 7 =
14. 14.99 × 87 =
15. 15.14 × 8 =
16. 16.97 × 86 =
17. 17.1007 × 992 =
18. 18.104 × 85 =
19. 19.114 × 96 =
20. 20.7 × 9 =
21. 21.996 × 997 =
22. 22.11 × 12 =
23. 23.94 × 96 =
24. 24.96 × 95 =
25. 25.7 × 9 =
26. 26.92 × 96 =
27. 27.115 × 92 =
28. 28.97 × 97 =
29. 29.91 × 87 =
30. 30.115 × 108 =
31. 31.13 × 7 =
32. 32.13 × 12 =
33. 33.963 × 963 =
34. 34.11 × 13 =
35. 35.99 × 86 =
36. 36.109 × 115 =
37. 37.102 × 90 =
38. 38.99 × 87 =
39. 39.12 × 8 =
40. 40.96 × 91 =

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