Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 429 · 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. 1.112 × 106 =
2. 2.104 × 97 =
3. 3.14 × 7 =
4. 4.1023 × 1013 =
5. 5.97 × 87 =
6. 6.965 × 975 =
7. 7.14 × 13 =
8. 8.7 × 7 =
9. 9.103 × 104 =
10. 10.9 × 8 =
11. 11.1015 × 973 =
12. 12.976 × 989 =
13. 13.114 × 87 =
14. 14.115 × 114 =
15. 15.12 × 14 =
16. 16.14 × 14 =
17. 17.1020 × 1018 =
18. 18.1023 × 1029 =
19. 19.9 × 6 =
20. 20.12 × 13 =
21. 21.1028 × 1036 =
22. 22.1036 × 1007 =
23. 23.113 × 91 =
24. 24.1033 × 975 =
25. 25.102 × 85 =
26. 26.102 × 96 =
27. 27.89 × 90 =
28. 28.89 × 98 =
29. 29.99 × 91 =
30. 30.14 × 13 =
31. 31.115 × 92 =
32. 32.11 × 9 =
33. 33.91 × 89 =
34. 34.12 × 11 =
35. 35.103 × 99 =
36. 36.87 × 93 =
37. 37.89 × 85 =
38. 38.6 × 7 =
39. 39.112 × 93 =
40. 40.95 × 85 =

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