Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 600 · 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. 1.43 × 15 =
2. 2.45 × 15 =
3. 3.14 × 15 =
4. 4.19 × 16 =
5. 5.47 × 18 =
6. 6.45 × 24 =
7. 7.47 × 14 =
8. 8.31 × 16 =
9. 9.37 × 16 =
10. 10.46 × 18 =
11. 11.22 × 24 =
12. 12.14 × 16 =
13. 13.30 × 14 =
14. 14.20 × 14 =
15. 15.34 × 12 =
16. 16.29 × 18 =
17. 17.35 × 24 =
18. 18.25 × 14 =
19. 19.13 × 12 =
20. 20.37 × 15 =
21. 21.14 × 12 =
22. 22.34 × 16 =
23. 23.49 × 12 =
24. 24.20 × 18 =
25. 25.38 × 12 =
26. 26.37 × 14 =
27. 27.27 × 18 =
28. 28.13 × 24 =
29. 29.19 × 14 =
30. 30.23 × 15 =
31. 31.41 × 14 =
32. 32.48 × 16 =
33. 33.33 × 16 =
34. 34.25 × 18 =
35. 35.27 × 16 =
36. 36.22 × 16 =
37. 37.25 × 24 =
38. 38.26 × 16 =
39. 39.36 × 24 =
40. 40.39 × 15 =

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