Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 970 · 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 × 98 =
2. 2.988 × 999 =
3. 3.970 × 983 =
4. 4.996 × 992 =
5. 5.7 × 8 =
6. 6.109 × 103 =
7. 7.11 × 13 =
8. 8.14 × 7 =
9. 9.11 × 9 =
10. 10.1035 × 1032 =
11. 11.7 × 7 =
12. 12.101 × 87 =
13. 13.8 × 8 =
14. 14.109 × 114 =
15. 15.9 × 7 =
16. 16.94 × 96 =
17. 17.7 × 7 =
18. 18.115 × 86 =
19. 19.85 × 92 =
20. 20.108 × 104 =
21. 21.97 × 93 =
22. 22.106 × 101 =
23. 23.992 × 989 =
24. 24.98 × 96 =
25. 25.9 × 9 =
26. 26.12 × 11 =
27. 27.6 × 6 =
28. 28.97 × 93 =
29. 29.103 × 88 =
30. 30.102 × 112 =
31. 31.114 × 93 =
32. 32.11 × 6 =
33. 33.961 × 977 =
34. 34.98 × 89 =
35. 35.86 × 98 =
36. 36.1008 × 992 =
37. 37.92 × 96 =
38. 38.86 × 88 =
39. 39.6 × 8 =
40. 40.110 × 104 =

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