Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 324 · 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. 1.98 × 86 =
2. 2.12 × 13 =
3. 3.109 × 91 =
4. 4.7 × 7 =
5. 5.1037 × 1020 =
6. 6.972 × 967 =
7. 7.12 × 12 =
8. 8.98 × 93 =
9. 9.107 × 113 =
10. 10.968 × 971 =
11. 11.99 × 98 =
12. 12.12 × 9 =
13. 13.11 × 11 =
14. 14.96 × 96 =
15. 15.11 × 6 =
16. 16.998 × 997 =
17. 17.1003 × 969 =
18. 18.1040 × 968 =
19. 19.7 × 6 =
20. 20.115 × 104 =
21. 21.91 × 97 =
22. 22.11 × 13 =
23. 23.111 × 88 =
24. 24.110 × 87 =
25. 25.8 × 9 =
26. 26.87 × 87 =
27. 27.114 × 97 =
28. 28.988 × 967 =
29. 29.9 × 6 =
30. 30.8 × 9 =
31. 31.96 × 93 =
32. 32.109 × 104 =
33. 33.9 × 8 =
34. 34.11 × 8 =
35. 35.986 × 974 =
36. 36.6 × 7 =
37. 37.103 × 91 =
38. 38.968 × 982 =
39. 39.969 × 973 =
40. 40.91 × 90 =

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