Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 915 · 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. 1.13 × 11 =
2. 2.99 × 98 =
3. 3.114 × 104 =
4. 4.101 × 109 =
5. 5.99 × 90 =
6. 6.91 × 88 =
7. 7.9 × 7 =
8. 8.1040 × 975 =
9. 9.86 × 96 =
10. 10.990 × 991 =
11. 11.97 × 99 =
12. 12.969 × 999 =
13. 13.105 × 89 =
14. 14.85 × 93 =
15. 15.104 × 88 =
16. 16.96 × 85 =
17. 17.104 × 89 =
18. 18.115 × 101 =
19. 19.12 × 9 =
20. 20.1038 × 1003 =
21. 21.108 × 94 =
22. 22.6 × 7 =
23. 23.14 × 9 =
24. 24.92 × 92 =
25. 25.960 × 988 =
26. 26.104 × 91 =
27. 27.997 × 983 =
28. 28.96 × 88 =
29. 29.108 × 85 =
30. 30.93 × 96 =
31. 31.93 × 98 =
32. 32.86 × 98 =
33. 33.90 × 92 =
34. 34.1036 × 967 =
35. 35.12 × 13 =
36. 36.11 × 12 =
37. 37.8 × 8 =
38. 38.107 × 104 =
39. 39.114 × 98 =
40. 40.980 × 961 =

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