Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 604 · 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 × 99 =
2. 2.90 × 96 =
3. 3.9 × 7 =
4. 4.1009 × 1007 =
5. 5.11 × 14 =
6. 6.110 × 113 =
7. 7.9 × 8 =
8. 8.13 × 9 =
9. 9.980 × 993 =
10. 10.7 × 7 =
11. 11.85 × 94 =
12. 12.113 × 113 =
13. 13.12 × 9 =
14. 14.1005 × 979 =
15. 15.90 × 99 =
16. 16.87 × 87 =
17. 17.92 × 98 =
18. 18.111 × 109 =
19. 19.99 × 93 =
20. 20.112 × 101 =
21. 21.1007 × 1001 =
22. 22.6 × 9 =
23. 23.104 × 98 =
24. 24.1010 × 977 =
25. 25.88 × 99 =
26. 26.99 × 93 =
27. 27.1002 × 991 =
28. 28.14 × 14 =
29. 29.103 × 106 =
30. 30.990 × 985 =
31. 31.986 × 972 =
32. 32.103 × 101 =
33. 33.114 × 88 =
34. 34.102 × 114 =
35. 35.1001 × 965 =
36. 36.1028 × 1036 =
37. 37.13 × 8 =
38. 38.974 × 996 =
39. 39.12 × 8 =
40. 40.984 × 969 =

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