Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 314 · 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. 1.22 × 16 =
2. 2.17 × 12 =
3. 3.19 × 16 =
4. 4.46 × 12 =
5. 5.41 × 12 =
6. 6.35 × 16 =
7. 7.26 × 16 =
8. 8.34 × 24 =
9. 9.31 × 24 =
10. 10.23 × 15 =
11. 11.40 × 15 =
12. 12.36 × 24 =
13. 13.15 × 14 =
14. 14.14 × 24 =
15. 15.28 × 24 =
16. 16.20 × 14 =
17. 17.43 × 24 =
18. 18.38 × 16 =
19. 19.19 × 24 =
20. 20.40 × 18 =
21. 21.11 × 15 =
22. 22.39 × 16 =
23. 23.45 × 12 =
24. 24.37 × 16 =
25. 25.33 × 12 =
26. 26.49 × 15 =
27. 27.24 × 15 =
28. 28.25 × 14 =
29. 29.11 × 18 =
30. 30.29 × 18 =
31. 31.21 × 18 =
32. 32.29 × 12 =
33. 33.39 × 24 =
34. 34.35 × 15 =
35. 35.24 × 24 =
36. 36.29 × 14 =
37. 37.11 × 14 =
38. 38.11 × 12 =
39. 39.33 × 24 =
40. 40.24 × 18 =

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