Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 603 · 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. 1.89 × 90 =
2. 2.113 × 107 =
3. 3.90 × 86 =
4. 4.92 × 89 =
5. 5.11 × 14 =
6. 6.1031 × 981 =
7. 7.111 × 85 =
8. 8.1034 × 982 =
9. 9.103 × 90 =
10. 10.99 × 95 =
11. 11.14 × 11 =
12. 12.1036 × 1040 =
13. 13.1005 × 993 =
14. 14.997 × 992 =
15. 15.103 × 96 =
16. 16.9 × 8 =
17. 17.109 × 91 =
18. 18.109 × 102 =
19. 19.988 × 994 =
20. 20.104 × 93 =
21. 21.14 × 14 =
22. 22.114 × 85 =
23. 23.8 × 9 =
24. 24.107 × 108 =
25. 25.109 × 111 =
26. 26.9 × 9 =
27. 27.6 × 6 =
28. 28.86 × 94 =
29. 29.96 × 88 =
30. 30.963 × 972 =
31. 31.93 × 98 =
32. 32.1004 × 1029 =
33. 33.89 × 87 =
34. 34.115 × 91 =
35. 35.11 × 12 =
36. 36.115 × 86 =
37. 37.112 × 96 =
38. 38.107 × 98 =
39. 39.114 × 104 =
40. 40.96 × 95 =

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