Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 100 · 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. 1.1033 × 978 =
2. 2.114 × 107 =
3. 3.961 × 972 =
4. 4.109 × 90 =
5. 5.1014 × 974 =
6. 6.98 × 91 =
7. 7.960 × 986 =
8. 8.13 × 7 =
9. 9.986 × 977 =
10. 10.7 × 6 =
11. 11.14 × 8 =
12. 12.105 × 104 =
13. 13.1032 × 991 =
14. 14.979 × 962 =
15. 15.89 × 91 =
16. 16.14 × 8 =
17. 17.106 × 95 =
18. 18.88 × 97 =
19. 19.91 × 90 =
20. 20.101 × 115 =
21. 21.6 × 8 =
22. 22.114 × 110 =
23. 23.1025 × 1015 =
24. 24.9 × 8 =
25. 25.99 × 98 =
26. 26.101 × 92 =
27. 27.6 × 7 =
28. 28.98 × 85 =
29. 29.95 × 95 =
30. 30.88 × 88 =
31. 31.1003 × 983 =
32. 32.96 × 85 =
33. 33.13 × 11 =
34. 34.115 × 108 =
35. 35.111 × 90 =
36. 36.991 × 998 =
37. 37.106 × 96 =
38. 38.1031 × 997 =
39. 39.102 × 104 =
40. 40.97 × 86 =

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