Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 599 · 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. 1.972 × 988 =
2. 2.103 × 109 =
3. 3.98 × 92 =
4. 4.103 × 99 =
5. 5.106 × 97 =
6. 6.8 × 6 =
7. 7.12 × 9 =
8. 8.9 × 6 =
9. 9.101 × 104 =
10. 10.87 × 97 =
11. 11.110 × 114 =
12. 12.99 × 99 =
13. 13.103 × 97 =
14. 14.91 × 89 =
15. 15.8 × 9 =
16. 16.9 × 6 =
17. 17.9 × 8 =
18. 18.96 × 85 =
19. 19.14 × 11 =
20. 20.965 × 964 =
21. 21.109 × 110 =
22. 22.994 × 962 =
23. 23.13 × 11 =
24. 24.8 × 7 =
25. 25.113 × 104 =
26. 26.95 × 92 =
27. 27.90 × 90 =
28. 28.108 × 99 =
29. 29.112 × 89 =
30. 30.101 × 104 =
31. 31.1012 × 1005 =
32. 32.985 × 989 =
33. 33.95 × 92 =
34. 34.1012 × 1008 =
35. 35.1007 × 1027 =
36. 36.989 × 969 =
37. 37.9 × 7 =
38. 38.14 × 9 =
39. 39.978 × 992 =
40. 40.103 × 103 =

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