Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 764 · 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. 1.97 × 87 =
2. 2.999 × 964 =
3. 3.113 × 99 =
4. 4.1040 × 1026 =
5. 5.11 × 14 =
6. 6.109 × 97 =
7. 7.103 × 91 =
8. 8.93 × 89 =
9. 9.98 × 98 =
10. 10.7 × 9 =
11. 11.108 × 109 =
12. 12.94 × 98 =
13. 13.7 × 9 =
14. 14.97 × 94 =
15. 15.11 × 14 =
16. 16.87 × 89 =
17. 17.105 × 104 =
18. 18.96 × 97 =
19. 19.8 × 6 =
20. 20.1028 × 1009 =
21. 21.1034 × 978 =
22. 22.114 × 105 =
23. 23.105 × 90 =
24. 24.12 × 8 =
25. 25.112 × 111 =
26. 26.111 × 105 =
27. 27.115 × 103 =
28. 28.1010 × 1023 =
29. 29.1037 × 984 =
30. 30.101 × 91 =
31. 31.89 × 90 =
32. 32.1019 × 981 =
33. 33.109 × 90 =
34. 34.1040 × 986 =
35. 35.99 × 99 =
36. 36.1009 × 962 =
37. 37.11 × 7 =
38. 38.1003 × 1019 =
39. 39.986 × 968 =
40. 40.9 × 6 =

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