Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 459 · 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. 1.37 × 15 =
2. 2.37 × 14 =
3. 3.29 × 18 =
4. 4.39 × 12 =
5. 5.40 × 16 =
6. 6.41 × 12 =
7. 7.44 × 12 =
8. 8.34 × 24 =
9. 9.34 × 15 =
10. 10.39 × 15 =
11. 11.45 × 15 =
12. 12.46 × 12 =
13. 13.15 × 24 =
14. 14.27 × 14 =
15. 15.27 × 18 =
16. 16.27 × 24 =
17. 17.15 × 16 =
18. 18.48 × 15 =
19. 19.36 × 18 =
20. 20.34 × 18 =
21. 21.11 × 15 =
22. 22.40 × 15 =
23. 23.30 × 16 =
24. 24.24 × 14 =
25. 25.24 × 16 =
26. 26.33 × 14 =
27. 27.16 × 14 =
28. 28.32 × 24 =
29. 29.15 × 12 =
30. 30.19 × 24 =
31. 31.42 × 18 =
32. 32.12 × 15 =
33. 33.46 × 24 =
34. 34.38 × 24 =
35. 35.41 × 15 =
36. 36.48 × 16 =
37. 37.35 × 24 =
38. 38.13 × 24 =
39. 39.21 × 14 =
40. 40.20 × 24 =

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