Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 717 · 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. 1.1007 × 1010 =
2. 2.98 × 91 =
3. 3.12 × 8 =
4. 4.1021 × 994 =
5. 5.96 × 94 =
6. 6.1020 × 979 =
7. 7.1035 × 1022 =
8. 8.11 × 7 =
9. 9.103 × 92 =
10. 10.9 × 6 =
11. 11.998 × 967 =
12. 12.96 × 94 =
13. 13.103 × 113 =
14. 14.9 × 7 =
15. 15.13 × 9 =
16. 16.92 × 91 =
17. 17.11 × 14 =
18. 18.7 × 9 =
19. 19.1029 × 1010 =
20. 20.110 × 113 =
21. 21.109 × 85 =
22. 22.980 × 992 =
23. 23.102 × 106 =
24. 24.14 × 9 =
25. 25.113 × 89 =
26. 26.111 × 104 =
27. 27.8 × 6 =
28. 28.95 × 86 =
29. 29.14 × 6 =
30. 30.12 × 6 =
31. 31.11 × 9 =
32. 32.988 × 988 =
33. 33.98 × 87 =
34. 34.975 × 972 =
35. 35.9 × 8 =
36. 36.110 × 104 =
37. 37.104 × 103 =
38. 38.981 × 990 =
39. 39.7 × 9 =
40. 40.973 × 968 =

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