Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 196 · 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. 1.1022 × 1038 =
2. 2.107 × 95 =
3. 3.101 × 104 =
4. 4.99 × 87 =
5. 5.8 × 6 =
6. 6.89 × 85 =
7. 7.9 × 9 =
8. 8.14 × 13 =
9. 9.102 × 103 =
10. 10.998 × 981 =
11. 11.8 × 6 =
12. 12.13 × 7 =
13. 13.110 × 90 =
14. 14.92 × 99 =
15. 15.107 × 113 =
16. 16.103 × 102 =
17. 17.113 × 110 =
18. 18.106 × 107 =
19. 19.14 × 9 =
20. 20.1012 × 980 =
21. 21.13 × 7 =
22. 22.106 × 90 =
23. 23.86 × 87 =
24. 24.87 × 88 =
25. 25.8 × 9 =
26. 26.1011 × 982 =
27. 27.92 × 85 =
28. 28.112 × 112 =
29. 29.105 × 111 =
30. 30.14 × 12 =
31. 31.991 × 960 =
32. 32.1001 × 1002 =
33. 33.969 × 993 =
34. 34.6 × 9 =
35. 35.114 × 86 =
36. 36.112 × 99 =
37. 37.88 × 86 =
38. 38.11 × 6 =
39. 39.12 × 13 =
40. 40.8 × 6 =

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