Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 40 · 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 × 105 =
2. 2.12 × 9 =
3. 3.101 × 97 =
4. 4.111 × 114 =
5. 5.7 × 8 =
6. 6.961 × 960 =
7. 7.1026 × 1023 =
8. 8.14 × 14 =
9. 9.103 × 109 =
10. 10.14 × 14 =
11. 11.115 × 85 =
12. 12.12 × 7 =
13. 13.1036 × 1028 =
14. 14.96 × 98 =
15. 15.112 × 112 =
16. 16.6 × 8 =
17. 17.109 × 104 =
18. 18.11 × 6 =
19. 19.115 × 85 =
20. 20.9 × 7 =
21. 21.9 × 7 =
22. 22.105 × 88 =
23. 23.115 × 109 =
24. 24.1001 × 1015 =
25. 25.992 × 979 =
26. 26.14 × 13 =
27. 27.996 × 996 =
28. 28.101 × 89 =
29. 29.9 × 9 =
30. 30.89 × 95 =
31. 31.1019 × 995 =
32. 32.110 × 105 =
33. 33.98 × 86 =
34. 34.101 × 111 =
35. 35.112 × 95 =
36. 36.989 × 985 =
37. 37.98 × 93 =
38. 38.7 × 7 =
39. 39.7 × 6 =
40. 40.101 × 112 =

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