Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 4 · 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. 1.104 × 107 =
2. 2.984 × 988 =
3. 3.967 × 991 =
4. 4.978 × 982 =
5. 5.114 × 101 =
6. 6.98 × 99 =
7. 7.983 × 979 =
8. 8.109 × 106 =
9. 9.109 × 106 =
10. 10.1026 × 998 =
11. 11.112 × 115 =
12. 12.984 × 968 =
13. 13.90 × 97 =
14. 14.89 × 95 =
15. 15.1023 × 963 =
16. 16.8 × 7 =
17. 17.8 × 6 =
18. 18.96 × 89 =
19. 19.13 × 11 =
20. 20.7 × 9 =
21. 21.1039 × 986 =
22. 22.103 × 96 =
23. 23.99 × 87 =
24. 24.1011 × 989 =
25. 25.85 × 86 =
26. 26.109 × 95 =
27. 27.91 × 93 =
28. 28.960 × 963 =
29. 29.99 × 91 =
30. 30.9 × 6 =
31. 31.9 × 7 =
32. 32.113 × 109 =
33. 33.86 × 94 =
34. 34.112 × 106 =
35. 35.997 × 980 =
36. 36.95 × 90 =
37. 37.12 × 14 =
38. 38.104 × 89 =
39. 39.1016 × 991 =
40. 40.99 × 93 =

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