Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 797 · 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. 1.99 × 89 =
2. 2.96 × 89 =
3. 3.108 × 99 =
4. 4.13 × 7 =
5. 5.1004 × 984 =
6. 6.96 × 94 =
7. 7.1007 × 985 =
8. 8.8 × 8 =
9. 9.101 × 87 =
10. 10.103 × 101 =
11. 11.112 × 91 =
12. 12.1020 × 960 =
13. 13.6 × 9 =
14. 14.86 × 89 =
15. 15.96 × 89 =
16. 16.8 × 9 =
17. 17.109 × 111 =
18. 18.106 × 93 =
19. 19.993 × 989 =
20. 20.981 × 988 =
21. 21.12 × 14 =
22. 22.11 × 13 =
23. 23.1019 × 1012 =
24. 24.6 × 7 =
25. 25.95 × 98 =
26. 26.114 × 88 =
27. 27.6 × 8 =
28. 28.9 × 7 =
29. 29.108 × 108 =
30. 30.87 × 97 =
31. 31.7 × 9 =
32. 32.99 × 89 =
33. 33.102 × 109 =
34. 34.1009 × 995 =
35. 35.6 × 9 =
36. 36.9 × 7 =
37. 37.90 × 95 =
38. 38.13 × 13 =
39. 39.989 × 968 =
40. 40.14 × 14 =

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