Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 995 · 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. 1.105 × 109 =
2. 2.1012 × 1037 =
3. 3.6 × 6 =
4. 4.97 × 97 =
5. 5.975 × 982 =
6. 6.13 × 11 =
7. 7.90 × 99 =
8. 8.12 × 13 =
9. 9.111 × 113 =
10. 10.6 × 9 =
11. 11.114 × 104 =
12. 12.103 × 101 =
13. 13.13 × 14 =
14. 14.112 × 107 =
15. 15.111 × 112 =
16. 16.109 × 95 =
17. 17.110 × 98 =
18. 18.88 × 95 =
19. 19.96 × 88 =
20. 20.14 × 6 =
21. 21.1017 × 966 =
22. 22.88 × 99 =
23. 23.105 × 91 =
24. 24.6 × 7 =
25. 25.12 × 12 =
26. 26.971 × 993 =
27. 27.110 × 91 =
28. 28.13 × 7 =
29. 29.963 × 970 =
30. 30.967 × 965 =
31. 31.11 × 12 =
32. 32.991 × 980 =
33. 33.11 × 11 =
34. 34.113 × 105 =
35. 35.102 × 113 =
36. 36.86 × 99 =
37. 37.108 × 109 =
38. 38.95 × 97 =
39. 39.105 × 94 =
40. 40.1031 × 996 =

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