Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 831 · 40 questions

The trick (Chain the factors): Split the multiplier into two small factors: 12 = 3 × 4, 14 = 2 × 7, 15 = 3 × 5, 16 = 4 × 4, 18 = 2 × 9, 24 = 4 × 6. Multiply by the first factor. Multiply that answer by the second factor (× 4 is double, double).

1. 1.17 × 24 =
2. 2.30 × 14 =
3. 3.45 × 24 =
4. 4.28 × 12 =
5. 5.42 × 16 =
6. 6.45 × 14 =
7. 7.48 × 16 =
8. 8.37 × 15 =
9. 9.38 × 14 =
10. 10.17 × 18 =
11. 11.14 × 18 =
12. 12.32 × 14 =
13. 13.22 × 18 =
14. 14.46 × 16 =
15. 15.20 × 16 =
16. 16.12 × 18 =
17. 17.43 × 16 =
18. 18.12 × 14 =
19. 19.21 × 18 =
20. 20.25 × 14 =
21. 21.19 × 14 =
22. 22.29 × 18 =
23. 23.42 × 24 =
24. 24.33 × 16 =
25. 25.27 × 12 =
26. 26.31 × 24 =
27. 27.18 × 18 =
28. 28.18 × 24 =
29. 29.16 × 24 =
30. 30.34 × 12 =
31. 31.24 × 16 =
32. 32.46 × 24 =
33. 33.48 × 12 =
34. 34.14 × 24 =
35. 35.42 × 15 =
36. 36.45 × 15 =
37. 37.19 × 24 =
38. 38.24 × 15 =
39. 39.11 × 14 =
40. 40.41 × 24 =

Free maths tricks lessons, practice and worksheets at talentjr.in/maths-tricks