Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 561 · 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. 1.12 × 9 =
2. 2.87 × 86 =
3. 3.104 × 104 =
4. 4.108 × 99 =
5. 5.1019 × 988 =
6. 6.13 × 13 =
7. 7.97 × 85 =
8. 8.113 × 101 =
9. 9.98 × 86 =
10. 10.96 × 98 =
11. 11.113 × 108 =
12. 12.1034 × 994 =
13. 13.996 × 997 =
14. 14.109 × 87 =
15. 15.98 × 98 =
16. 16.1002 × 1007 =
17. 17.13 × 6 =
18. 18.103 × 91 =
19. 19.7 × 9 =
20. 20.12 × 8 =
21. 21.98 × 95 =
22. 22.1002 × 1003 =
23. 23.12 × 12 =
24. 24.102 × 109 =
25. 25.101 × 99 =
26. 26.93 × 99 =
27. 27.994 × 994 =
28. 28.99 × 99 =
29. 29.111 × 94 =
30. 30.89 × 93 =
31. 31.92 × 92 =
32. 32.104 × 88 =
33. 33.96 × 97 =
34. 34.1011 × 1036 =
35. 35.13 × 12 =
36. 36.101 × 103 =
37. 37.97 × 88 =
38. 38.11 × 11 =
39. 39.13 × 9 =
40. 40.102 × 109 =

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