Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 980 · 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. 1.112 × 94 =
2. 2.101 × 86 =
3. 3.1040 × 990 =
4. 4.9 × 8 =
5. 5.7 × 8 =
6. 6.109 × 111 =
7. 7.112 × 106 =
8. 8.99 × 95 =
9. 9.115 × 93 =
10. 10.1028 × 1018 =
11. 11.112 × 107 =
12. 12.1012 × 1036 =
13. 13.1031 × 1035 =
14. 14.98 × 97 =
15. 15.109 × 97 =
16. 16.13 × 13 =
17. 17.1030 × 1017 =
18. 18.106 × 104 =
19. 19.86 × 87 =
20. 20.114 × 87 =
21. 21.108 × 98 =
22. 22.104 × 104 =
23. 23.7 × 9 =
24. 24.106 × 85 =
25. 25.102 × 96 =
26. 26.88 × 85 =
27. 27.1033 × 1030 =
28. 28.95 × 97 =
29. 29.89 × 91 =
30. 30.7 × 6 =
31. 31.92 × 96 =
32. 32.114 × 97 =
33. 33.99 × 98 =
34. 34.85 × 97 =
35. 35.98 × 95 =
36. 36.94 × 98 =
37. 37.1004 × 1032 =
38. 38.1030 × 1033 =
39. 39.115 × 113 =
40. 40.11 × 6 =

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