Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 451 · 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. 1.104 × 105 =
2. 2.98 × 99 =
3. 3.102 × 98 =
4. 4.85 × 96 =
5. 5.99 × 95 =
6. 6.114 × 109 =
7. 7.109 × 96 =
8. 8.99 × 93 =
9. 9.978 × 981 =
10. 10.1010 × 1014 =
11. 11.98 × 95 =
12. 12.98 × 96 =
13. 13.85 × 99 =
14. 14.1036 × 1028 =
15. 15.12 × 11 =
16. 16.106 × 114 =
17. 17.12 × 9 =
18. 18.109 × 104 =
19. 19.109 × 107 =
20. 20.6 × 6 =
21. 21.108 × 93 =
22. 22.105 × 101 =
23. 23.106 × 107 =
24. 24.1032 × 1011 =
25. 25.13 × 13 =
26. 26.970 × 982 =
27. 27.9 × 6 =
28. 28.13 × 7 =
29. 29.108 × 109 =
30. 30.108 × 90 =
31. 31.11 × 9 =
32. 32.13 × 13 =
33. 33.983 × 988 =
34. 34.14 × 12 =
35. 35.94 × 87 =
36. 36.88 × 97 =
37. 37.103 × 113 =
38. 38.6 × 7 =
39. 39.101 × 89 =
40. 40.101 × 104 =

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