Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 170 · 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. 1.43 + 11 + 57 + 20 =
2. 2.Check with nines: 306 + 489 = 795. Correct or wrong? (a) wrong (b) correct
3. 3.Best estimate of 29 × 59? (a) 3600 (b) 1800 (c) 18000 (d) 180
4. 4.89² =
5. 5.368 + 29 =
6. 6.Best estimate of 48 × 28? (a) 150 (b) 15000 (c) 3000 (d) 1500
7. 7.₹41.10 − ₹34.75 =
8. 8.68 + 57 + 73 + 13 =
9. 9.307 − 27 =
10. 10.675 ÷ 25 =
11. 11.91 + 58 =
12. 12.39 × 8 =
13. 13.14 × 12 =
14. 14.12 × 14 =
15. 15.91² =
16. 16.67 × 8 =
17. 17.212 + 68 =
18. 18.11 × 16 =
19. 19.Check with nines: 467 + 941 = 1408. Correct or wrong? (a) wrong (b) correct
20. 20.72 × 5 =
21. 21.71² =
22. 22.551 − 48 =
23. 23.6 × 15 =
24. 24.590 ÷ 5 =
25. 25.Best estimate of 397 × 9? (a) 36000 (b) 3600 (c) 360 (d) 7200
26. 26.146 + 38 =
27. 27.10% of 80 =
28. 28.775 ÷ 25 =
29. 29.71² =
30. 30.29 × 15 =
31. 31.Check with nines: 141 + 354 = 496. Correct or wrong? (a) wrong (b) correct
32. 32.8 + 4 + 6 + 2 + 8 =
33. 33.35 × 50 =
34. 34.81² =
35. 35.20% of 570 =
36. 36.17 × 12 =
37. 37.46 × 8 =
38. 38.685 ÷ 5 =
39. 39.17 × 11 =
40. 40.29² =

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