Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 750 · 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. 1.8 × 7 =
2. 2.8 × 7 =
3. 3.1011 × 1007 =
4. 4.113 × 102 =
5. 5.92 × 88 =
6. 6.111 × 113 =
7. 7.1014 × 1001 =
8. 8.112 × 101 =
9. 9.101 × 89 =
10. 10.960 × 970 =
11. 11.107 × 109 =
12. 12.109 × 103 =
13. 13.107 × 95 =
14. 14.104 × 103 =
15. 15.95 × 97 =
16. 16.9 × 9 =
17. 17.967 × 982 =
18. 18.102 × 103 =
19. 19.99 × 95 =
20. 20.8 × 8 =
21. 21.1024 × 1033 =
22. 22.990 × 995 =
23. 23.93 × 98 =
24. 24.101 × 105 =
25. 25.98 × 89 =
26. 26.112 × 87 =
27. 27.93 × 99 =
28. 28.92 × 95 =
29. 29.96 × 94 =
30. 30.108 × 91 =
31. 31.112 × 105 =
32. 32.11 × 8 =
33. 33.12 × 12 =
34. 34.9 × 6 =
35. 35.97 × 95 =
36. 36.105 × 112 =
37. 37.8 × 7 =
38. 38.105 × 105 =
39. 39.109 × 112 =
40. 40.111 × 108 =

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