Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 21 · 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. 1.109 × 108 =
2. 2.8 × 8 =
3. 3.91 × 94 =
4. 4.11 × 11 =
5. 5.113 × 101 =
6. 6.110 × 102 =
7. 7.112 × 112 =
8. 8.85 × 86 =
9. 9.108 × 113 =
10. 10.979 × 977 =
11. 11.94 × 94 =
12. 12.99 × 94 =
13. 13.1036 × 969 =
14. 14.963 × 973 =
15. 15.110 × 89 =
16. 16.1031 × 1014 =
17. 17.8 × 6 =
18. 18.98 × 96 =
19. 19.9 × 8 =
20. 20.98 × 90 =
21. 21.103 × 97 =
22. 22.109 × 94 =
23. 23.89 × 97 =
24. 24.105 × 92 =
25. 25.102 × 102 =
26. 26.106 × 88 =
27. 27.106 × 88 =
28. 28.11 × 8 =
29. 29.89 × 95 =
30. 30.108 × 95 =
31. 31.9 × 9 =
32. 32.13 × 6 =
33. 33.11 × 6 =
34. 34.974 × 975 =
35. 35.1021 × 975 =
36. 36.8 × 9 =
37. 37.96 × 92 =
38. 38.107 × 98 =
39. 39.11 × 8 =
40. 40.963 × 989 =

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