Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 709 · 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. 1.7 × 7 =
2. 2.108 × 104 =
3. 3.104 × 97 =
4. 4.13 × 9 =
5. 5.86 × 91 =
6. 6.85 × 93 =
7. 7.89 × 94 =
8. 8.103 × 87 =
9. 9.12 × 9 =
10. 10.93 × 97 =
11. 11.90 × 94 =
12. 12.12 × 6 =
13. 13.7 × 7 =
14. 14.8 × 6 =
15. 15.89 × 97 =
16. 16.14 × 7 =
17. 17.6 × 8 =
18. 18.90 × 91 =
19. 19.99 × 99 =
20. 20.13 × 14 =
21. 21.106 × 106 =
22. 22.92 × 92 =
23. 23.88 × 89 =
24. 24.90 × 99 =
25. 25.103 × 99 =
26. 26.102 × 98 =
27. 27.9 × 9 =
28. 28.96 × 92 =
29. 29.9 × 7 =
30. 30.101 × 114 =
31. 31.104 × 110 =
32. 32.94 × 92 =
33. 33.110 × 94 =
34. 34.9 × 8 =
35. 35.94 × 95 =
36. 36.985 × 964 =
37. 37.9 × 9 =
38. 38.112 × 95 =
39. 39.960 × 977 =
40. 40.88 × 91 =

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