Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 446 · 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. 1.86 × 91 =
2. 2.1023 × 1007 =
3. 3.14 × 11 =
4. 4.113 × 111 =
5. 5.92 × 90 =
6. 6.11 × 12 =
7. 7.6 × 9 =
8. 8.1031 × 1012 =
9. 9.8 × 8 =
10. 10.94 × 85 =
11. 11.104 × 99 =
12. 12.95 × 85 =
13. 13.8 × 8 =
14. 14.108 × 103 =
15. 15.7 × 8 =
16. 16.86 × 99 =
17. 17.113 × 112 =
18. 18.994 × 970 =
19. 19.101 × 90 =
20. 20.102 × 106 =
21. 21.111 × 101 =
22. 22.114 × 95 =
23. 23.111 × 103 =
24. 24.979 × 989 =
25. 25.105 × 103 =
26. 26.106 × 103 =
27. 27.104 × 93 =
28. 28.111 × 111 =
29. 29.9 × 9 =
30. 30.12 × 12 =
31. 31.13 × 8 =
32. 32.7 × 9 =
33. 33.99 × 90 =
34. 34.985 × 969 =
35. 35.14 × 7 =
36. 36.13 × 12 =
37. 37.101 × 102 =
38. 38.14 × 13 =
39. 39.98 × 89 =
40. 40.105 × 89 =

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