Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 253 · 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. 1.470 + 77 =
2. 2.Best estimate of 403 × 3? (a) 12000 (b) 120 (c) 2400 (d) 1200
3. 3.86 + 48 =
4. 4.Best estimate of 603 × 9? (a) 540 (b) 10800 (c) 54000 (d) 5400
5. 5.24 × 15 =
6. 6.2 + 6 + 3 + 7 =
7. 7.850 ÷ 50 =
8. 8.474 − 28 =
9. 9.Best estimate of 88 × 92? (a) 81000 (b) 810 (c) 16200 (d) 8100
10. 10.Check with nines: 25 × 17 = 433. Correct or wrong? (a) correct (b) wrong
11. 11.825 ÷ 25 =
12. 12.5 + 2 + 9 + 5 =
13. 13.Check with nines: 688 + 966 = 1654. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 268 + 583 = 851. Correct or wrong? (a) wrong (b) correct
15. 15.12 × 8 =
16. 16.461 + 58 =
17. 17.347 + 57 =
18. 18.Check with nines: 723 + 313 = 1036. Correct or wrong? (a) correct (b) wrong
19. 19.52 + 81 + 17 + 81 =
20. 20.900 ÷ 50 =
21. 21.35 + 68 + 76 + 21 =
22. 22.306 + 49 =
23. 23.153 − 97 =
24. 24.46 × 15 =
25. 25.1250 ÷ 50 =
26. 26.Check with nines: 23 × 77 = 1771. Correct or wrong? (a) wrong (b) correct
27. 27.82 + 38 + 56 + 73 =
28. 28.58 + 20 + 31 + 14 =
29. 29.Check with nines: 82 × 22 = 1804. Correct or wrong? (a) wrong (b) correct
30. 30.15 × 15 =
31. 31.16 + 17 + 25 + 50 =
32. 32.₹22.90 + ₹34.35 =
33. 33.18 × 15 =
34. 34.13 × 18 =
35. 35.6 + 7 + 6 + 5 + 5 =
36. 36.Check with nines: 46 × 59 = 2714. Correct or wrong? (a) wrong (b) correct
37. 37.₹20.75 + ₹49.15 =
38. 38.52 × 15 =
39. 39.116 + 59 =
40. 40.₹61.95 + ₹22.30 =

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