Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 657 · 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. 1.14 × 12 =
2. 2.107 × 87 =
3. 3.90 × 99 =
4. 4.101 × 104 =
5. 5.9 × 7 =
6. 6.96 × 93 =
7. 7.14 × 6 =
8. 8.1004 × 1014 =
9. 9.12 × 12 =
10. 10.14 × 6 =
11. 11.105 × 106 =
12. 12.1007 × 1002 =
13. 13.109 × 103 =
14. 14.107 × 114 =
15. 15.7 × 8 =
16. 16.114 × 94 =
17. 17.108 × 99 =
18. 18.101 × 91 =
19. 19.90 × 86 =
20. 20.114 × 112 =
21. 21.103 × 88 =
22. 22.88 × 96 =
23. 23.6 × 9 =
24. 24.112 × 90 =
25. 25.7 × 9 =
26. 26.94 × 99 =
27. 27.1038 × 993 =
28. 28.110 × 99 =
29. 29.1018 × 1010 =
30. 30.104 × 97 =
31. 31.7 × 8 =
32. 32.108 × 99 =
33. 33.978 × 972 =
34. 34.113 × 104 =
35. 35.98 × 94 =
36. 36.101 × 111 =
37. 37.105 × 111 =
38. 38.115 × 93 =
39. 39.13 × 9 =
40. 40.1012 × 1011 =

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