Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 370 · 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. 1.1017 × 993 =
2. 2.11 × 6 =
3. 3.114 × 98 =
4. 4.113 × 112 =
5. 5.12 × 13 =
6. 6.98 × 94 =
7. 7.7 × 6 =
8. 8.1028 × 1007 =
9. 9.105 × 85 =
10. 10.981 × 988 =
11. 11.7 × 7 =
12. 12.12 × 12 =
13. 13.985 × 970 =
14. 14.1012 × 988 =
15. 15.11 × 6 =
16. 16.982 × 966 =
17. 17.968 × 998 =
18. 18.115 × 98 =
19. 19.11 × 13 =
20. 20.103 × 115 =
21. 21.102 × 92 =
22. 22.1020 × 1040 =
23. 23.86 × 85 =
24. 24.13 × 8 =
25. 25.6 × 8 =
26. 26.1015 × 977 =
27. 27.104 × 99 =
28. 28.98 × 96 =
29. 29.108 × 86 =
30. 30.104 × 108 =
31. 31.108 × 96 =
32. 32.90 × 99 =
33. 33.965 × 971 =
34. 34.101 × 108 =
35. 35.11 × 11 =
36. 36.106 × 98 =
37. 37.14 × 7 =
38. 38.11 × 9 =
39. 39.995 × 980 =
40. 40.106 × 113 =

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