Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 760 · 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 × 98 =
2. 2.13 × 13 =
3. 3.979 × 974 =
4. 4.14 × 11 =
5. 5.88 × 88 =
6. 6.980 × 997 =
7. 7.8 × 9 =
8. 8.99 × 96 =
9. 9.13 × 13 =
10. 10.108 × 104 =
11. 11.111 × 85 =
12. 12.113 × 102 =
13. 13.111 × 114 =
14. 14.98 × 90 =
15. 15.105 × 113 =
16. 16.86 × 99 =
17. 17.113 × 106 =
18. 18.107 × 96 =
19. 19.1017 × 983 =
20. 20.8 × 6 =
21. 21.97 × 87 =
22. 22.114 × 105 =
23. 23.92 × 87 =
24. 24.1018 × 1018 =
25. 25.110 × 102 =
26. 26.9 × 9 =
27. 27.112 × 107 =
28. 28.1004 × 972 =
29. 29.1011 × 976 =
30. 30.111 × 102 =
31. 31.14 × 12 =
32. 32.969 × 996 =
33. 33.96 × 87 =
34. 34.96 × 92 =
35. 35.102 × 111 =
36. 36.85 × 95 =
37. 37.90 × 93 =
38. 38.98 × 90 =
39. 39.1018 × 1004 =
40. 40.115 × 113 =

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