Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 407 · 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. 1.21² =
2. 2.4 × 15 =
3. 3.42 × 50 =
4. 4.254 − 27 =
5. 5.3 + 8 + 7 + 9 + 2 =
6. 6.60 × 50 =
7. 7.33 × 15 =
8. 8.4 + 7 + 8 + 1 + 2 =
9. 9.9 + 1 + 1 + 2 =
10. 10.18 × 12 =
11. 11.195 + 58 =
12. 12.61 × 5 =
13. 13.29² =
14. 14.158 − 19 =
15. 15.Best estimate of 702 × 4? (a) 2800 (b) 5600 (c) 280 (d) 28000
16. 16.Best estimate of 38 × 58? (a) 240 (b) 24000 (c) 4800 (d) 2400
17. 17.39² =
18. 18.18 × 4 =
19. 19.47 × 15 =
20. 20.₹29.55 + ₹27.05 =
21. 21.11 × 12 =
22. 22.41² =
23. 23.365 + 77 =
24. 24.381 − 59 =
25. 25.Check with nines: 329 + 276 = 604. Correct or wrong? (a) wrong (b) correct
26. 26.48 × 5 =
27. 27.5 + 2 + 1 + 5 + 5 =
28. 28.Check with nines: 52 × 54 = 2808. Correct or wrong? (a) wrong (b) correct
29. 29.51 × 8 =
30. 30.Best estimate of 68 × 29? (a) 210 (b) 4200 (c) 2100 (d) 21000
31. 31.3 + 2 + 8 + 6 =
32. 32.226 + 87 =
33. 33.129 × 4 =
34. 34.143 × 4 =
35. 35.1000 ÷ 50 =
36. 36.49² =
37. 37.Check with nines: 746 + 222 = 975. Correct or wrong? (a) correct (b) wrong
38. 38.75 + 18 + 29 + 16 =
39. 39.20% of 190 =
40. 40.Best estimate of 103 × 4? (a) 400 (b) 4000 (c) 40 (d) 800

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