Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 688 · 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 × 104 =
2. 2.6 × 6 =
3. 3.8 × 6 =
4. 4.7 × 8 =
5. 5.99 × 87 =
6. 6.91 × 98 =
7. 7.113 × 102 =
8. 8.14 × 11 =
9. 9.104 × 113 =
10. 10.976 × 983 =
11. 11.1023 × 1031 =
12. 12.1010 × 965 =
13. 13.11 × 9 =
14. 14.8 × 8 =
15. 15.11 × 12 =
16. 16.102 × 106 =
17. 17.13 × 11 =
18. 18.14 × 7 =
19. 19.12 × 8 =
20. 20.99 × 89 =
21. 21.113 × 101 =
22. 22.105 × 87 =
23. 23.1011 × 982 =
24. 24.108 × 110 =
25. 25.989 × 986 =
26. 26.86 × 97 =
27. 27.109 × 103 =
28. 28.13 × 6 =
29. 29.97 × 96 =
30. 30.7 × 7 =
31. 31.94 × 96 =
32. 32.14 × 8 =
33. 33.96 × 97 =
34. 34.115 × 109 =
35. 35.93 × 95 =
36. 36.14 × 6 =
37. 37.1003 × 972 =
38. 38.98 × 89 =
39. 39.101 × 88 =
40. 40.107 × 106 =

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