Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 808 · 40 questions

The fast method (Spot the trick): A 7, 8 or 9 in the ones place → round and fix. × 4, 8, 5, 50 or 15 → doubling or halving tricks. ÷ 5, 25 or 50 → double first. A percentage → start from 10%. Checking or estimating → nines or rounding.

1. 1.27 × 15 =
2. 2.27 × 5 =
3. 3.₹63.20 + ₹34.40 =
4. 4.48 × 15 =
5. 5.8 + 2 + 8 + 8 =
6. 6.Best estimate of 397 × 3? (a) 12000 (b) 2400 (c) 120 (d) 1200
7. 7.307 + 58 =
8. 8.507 − 39 =
9. 9.19 × 11 =
10. 10.2 + 3 + 8 + 2 + 3 =
11. 11.Check with nines: 24 × 86 = 2064. Correct or wrong? (a) correct (b) wrong
12. 12.39² =
13. 13.8 + 4 + 4 + 2 + 8 =
14. 14.81² =
15. 15.41² =
16. 16.56 × 15 =
17. 17.49² =
18. 18.311 + 67 =
19. 19.391 − 77 =
20. 20.Best estimate of 42 × 31? (a) 120 (b) 12000 (c) 1200 (d) 2400
21. 21.Best estimate of 39 × 28? (a) 2400 (b) 1200 (c) 12000 (d) 120
22. 22.10% of 120 =
23. 23.Best estimate of 798 × 3? (a) 24000 (b) 4800 (c) 2400 (d) 240
24. 24.39² =
25. 25.455 + 37 =
26. 26.₹66.65 + ₹6.20 =
27. 27.110 − 66 =
28. 28.314 − 26 =
29. 29.1% of 700 =
30. 30.39² =
31. 31.594 − 16 =
32. 32.48 × 15 =
33. 33.6 + 8 + 2 + 1 + 7 =
34. 34.48 × 5 =
35. 35.82 × 5 =
36. 36.Check with nines: 18 × 23 = 414. Correct or wrong? (a) correct (b) wrong
37. 37.1950 ÷ 50 =
38. 38.49² =
39. 39.12 × 13 =
40. 40.Check with nines: 33 × 64 = 2105. Correct or wrong? (a) correct (b) wrong

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