Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 761 · 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. 1.31 × 16 =
2. 2.30 × 12 =
3. 3.23 × 14 =
4. 4.35 × 15 =
5. 5.28 × 18 =
6. 6.44 × 24 =
7. 7.25 × 18 =
8. 8.45 × 18 =
9. 9.37 × 24 =
10. 10.31 × 14 =
11. 11.22 × 15 =
12. 12.29 × 16 =
13. 13.22 × 16 =
14. 14.41 × 12 =
15. 15.28 × 16 =
16. 16.35 × 16 =
17. 17.34 × 12 =
18. 18.23 × 16 =
19. 19.43 × 18 =
20. 20.26 × 24 =
21. 21.21 × 15 =
22. 22.25 × 16 =
23. 23.28 × 24 =
24. 24.11 × 14 =
25. 25.33 × 15 =
26. 26.49 × 24 =
27. 27.14 × 15 =
28. 28.11 × 24 =
29. 29.22 × 24 =
30. 30.34 × 15 =
31. 31.14 × 14 =
32. 32.37 × 18 =
33. 33.29 × 15 =
34. 34.20 × 24 =
35. 35.20 × 14 =
36. 36.11 × 12 =
37. 37.14 × 24 =
38. 38.45 × 14 =
39. 39.36 × 18 =
40. 40.16 × 14 =

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