Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 362 · 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. 1.14 × 12 =
2. 2.29 × 14 =
3. 3.33 × 14 =
4. 4.21 × 18 =
5. 5.20 × 15 =
6. 6.46 × 24 =
7. 7.47 × 12 =
8. 8.38 × 14 =
9. 9.45 × 18 =
10. 10.44 × 12 =
11. 11.34 × 14 =
12. 12.31 × 16 =
13. 13.39 × 12 =
14. 14.40 × 18 =
15. 15.31 × 12 =
16. 16.11 × 24 =
17. 17.37 × 14 =
18. 18.11 × 14 =
19. 19.21 × 15 =
20. 20.20 × 16 =
21. 21.17 × 15 =
22. 22.38 × 24 =
23. 23.26 × 15 =
24. 24.45 × 14 =
25. 25.15 × 15 =
26. 26.19 × 14 =
27. 27.27 × 16 =
28. 28.20 × 24 =
29. 29.41 × 12 =
30. 30.27 × 18 =
31. 31.36 × 12 =
32. 32.22 × 15 =
33. 33.32 × 15 =
34. 34.36 × 18 =
35. 35.28 × 12 =
36. 36.46 × 14 =
37. 37.13 × 14 =
38. 38.30 × 16 =
39. 39.33 × 12 =
40. 40.46 × 18 =

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