Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 556 · 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. 1.451 − 19 =
2. 2.21² =
3. 3.Best estimate of 798 × 9? (a) 7200 (b) 14400 (c) 720 (d) 72000
4. 4.69 + 11 + 27 + 87 =
5. 5.200 − 38 =
6. 6.42 × 5 =
7. 7.1200 ÷ 25 =
8. 8.46 × 8 =
9. 9.81² =
10. 10.Best estimate of 61 × 91? (a) 540 (b) 54000 (c) 10800 (d) 5400
11. 11.91² =
12. 12.12 × 15 =
13. 13.59 − 48 =
14. 14.Check with nines: 40 × 72 = 2880. Correct or wrong? (a) correct (b) wrong
15. 15.12 × 19 =
16. 16.9 + 1 + 6 + 4 =
17. 17.16 × 17 =
18. 18.74 × 4 =
19. 19.18 × 17 =
20. 20.2 + 2 + 8 + 8 =
21. 21.Check with nines: 81 × 48 = 3888. Correct or wrong? (a) wrong (b) correct
22. 22.552 − 78 =
23. 23.70 × 5 =
24. 24.6 + 3 + 7 + 4 =
25. 25.11 × 18 =
26. 26.349 − 16 =
27. 27.17 × 5 =
28. 28.₹33.05 + ₹11.15 =
29. 29.12 × 11 =
30. 30.246 − 78 =
31. 31.Best estimate of 31 × 78? (a) 4800 (b) 240 (c) 24000 (d) 2400
32. 32.145 + 89 =
33. 33.4 + 6 + 3 + 8 =
34. 34.5 + 7 + 3 + 2 + 3 =
35. 35.58 + 33 + 17 + 77 =
36. 36.430 − 46 =
37. 37.Check with nines: 74 × 50 = 3700. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 456 + 202 = 652. Correct or wrong? (a) wrong (b) correct
39. 39.162 + 48 =
40. 40.₹72.90 + ₹13.45 =

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