Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 878 · 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. 1.7 × 6 =
2. 2.11 × 11 =
3. 3.14 × 12 =
4. 4.89 × 91 =
5. 5.96 × 98 =
6. 6.108 × 104 =
7. 7.12 × 11 =
8. 8.107 × 115 =
9. 9.14 × 11 =
10. 10.98 × 87 =
11. 11.989 × 983 =
12. 12.105 × 97 =
13. 13.92 × 90 =
14. 14.96 × 86 =
15. 15.104 × 114 =
16. 16.7 × 6 =
17. 17.87 × 91 =
18. 18.106 × 108 =
19. 19.85 × 99 =
20. 20.8 × 8 =
21. 21.104 × 106 =
22. 22.114 × 113 =
23. 23.7 × 9 =
24. 24.103 × 111 =
25. 25.110 × 103 =
26. 26.89 × 97 =
27. 27.980 × 996 =
28. 28.99 × 87 =
29. 29.111 × 92 =
30. 30.114 × 98 =
31. 31.86 × 98 =
32. 32.88 × 93 =
33. 33.1014 × 1007 =
34. 34.89 × 97 =
35. 35.99 × 91 =
36. 36.103 × 97 =
37. 37.101 × 115 =
38. 38.101 × 95 =
39. 39.112 × 106 =
40. 40.103 × 90 =

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