Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 249 · 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. 1.13 × 24 =
2. 2.29 × 18 =
3. 3.16 × 18 =
4. 4.32 × 14 =
5. 5.46 × 18 =
6. 6.13 × 12 =
7. 7.23 × 12 =
8. 8.22 × 15 =
9. 9.45 × 14 =
10. 10.25 × 18 =
11. 11.31 × 24 =
12. 12.29 × 24 =
13. 13.46 × 16 =
14. 14.23 × 24 =
15. 15.18 × 14 =
16. 16.37 × 24 =
17. 17.18 × 15 =
18. 18.49 × 16 =
19. 19.28 × 24 =
20. 20.11 × 15 =
21. 21.12 × 24 =
22. 22.37 × 15 =
23. 23.45 × 24 =
24. 24.38 × 24 =
25. 25.19 × 14 =
26. 26.49 × 18 =
27. 27.36 × 12 =
28. 28.43 × 14 =
29. 29.15 × 12 =
30. 30.33 × 12 =
31. 31.46 × 12 =
32. 32.12 × 14 =
33. 33.44 × 24 =
34. 34.13 × 16 =
35. 35.34 × 12 =
36. 36.20 × 16 =
37. 37.21 × 12 =
38. 38.37 × 16 =
39. 39.45 × 12 =
40. 40.15 × 18 =

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