Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 618 · 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 × 6 =
2. 2.88 × 88 =
3. 3.97 × 93 =
4. 4.9 × 9 =
5. 5.91 × 94 =
6. 6.1035 × 1030 =
7. 7.1014 × 983 =
8. 8.1006 × 1036 =
9. 9.87 × 88 =
10. 10.991 × 973 =
11. 11.108 × 98 =
12. 12.102 × 115 =
13. 13.983 × 997 =
14. 14.1013 × 1005 =
15. 15.102 × 86 =
16. 16.93 × 85 =
17. 17.7 × 8 =
18. 18.13 × 9 =
19. 19.14 × 13 =
20. 20.103 × 115 =
21. 21.1025 × 1040 =
22. 22.1022 × 1011 =
23. 23.1035 × 1031 =
24. 24.103 × 85 =
25. 25.13 × 12 =
26. 26.6 × 6 =
27. 27.112 × 104 =
28. 28.105 × 92 =
29. 29.1012 × 973 =
30. 30.1040 × 1035 =
31. 31.13 × 6 =
32. 32.13 × 14 =
33. 33.95 × 99 =
34. 34.11 × 14 =
35. 35.105 × 90 =
36. 36.105 × 91 =
37. 37.7 × 8 =
38. 38.1040 × 1011 =
39. 39.97 × 86 =
40. 40.6 × 8 =

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