Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 697 · 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. 1.9 × 9 =
2. 2.106 × 93 =
3. 3.1015 × 1005 =
4. 4.89 × 90 =
5. 5.88 × 85 =
6. 6.110 × 86 =
7. 7.969 × 973 =
8. 8.112 × 105 =
9. 9.7 × 9 =
10. 10.1040 × 1022 =
11. 11.12 × 14 =
12. 12.988 × 997 =
13. 13.1022 × 971 =
14. 14.85 × 87 =
15. 15.104 × 105 =
16. 16.1023 × 1032 =
17. 17.6 × 8 =
18. 18.114 × 102 =
19. 19.1008 × 982 =
20. 20.14 × 14 =
21. 21.104 × 92 =
22. 22.970 × 965 =
23. 23.13 × 13 =
24. 24.113 × 89 =
25. 25.85 × 97 =
26. 26.9 × 6 =
27. 27.14 × 14 =
28. 28.11 × 14 =
29. 29.88 × 99 =
30. 30.8 × 6 =
31. 31.966 × 981 =
32. 32.110 × 99 =
33. 33.101 × 102 =
34. 34.109 × 92 =
35. 35.8 × 9 =
36. 36.1020 × 975 =
37. 37.112 × 91 =
38. 38.14 × 6 =
39. 39.102 × 95 =
40. 40.6 × 9 =

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