Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 3 · 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. 1.8 + 4 + 6 + 2 =
2. 2.2 + 7 + 3 + 3 + 7 =
3. 3.292 − 76 =
4. 4.Check with nines: 816 + 337 = 1151. Correct or wrong? (a) wrong (b) correct
5. 5.85 + 88 =
6. 6.21² =
7. 7.530 − 79 =
8. 8.406 + 68 =
9. 9.203 − 27 =
10. 10.6 + 4 + 7 + 4 + 3 =
11. 11.56 + 77 + 27 + 38 =
12. 12.23 × 5 =
13. 13.18 × 15 =
14. 14.63 + 88 + 18 + 32 =
15. 15.Best estimate of 402 × 4? (a) 3200 (b) 1600 (c) 16000 (d) 160
16. 16.62 × 5 =
17. 17.97 × 4 =
18. 18.Check with nines: 475 + 880 = 1348. Correct or wrong? (a) correct (b) wrong
19. 19.580 − 59 =
20. 20.Check with nines: 69 × 89 = 6141. Correct or wrong? (a) wrong (b) correct
21. 21.155 + 27 =
22. 22.25 + 78 + 46 + 84 =
23. 23.800 ÷ 25 =
24. 24.800 ÷ 50 =
25. 25.3 + 7 + 4 + 6 =
26. 26.50% of 540 =
27. 27.86 + 59 =
28. 28.536 − 17 =
29. 29.49² =
30. 30.3 + 3 + 3 + 7 =
31. 31.Best estimate of 71 × 38? (a) 2800 (b) 5600 (c) 28000 (d) 280
32. 32.Best estimate of 799 × 6? (a) 4800 (b) 480 (c) 48000 (d) 9600
33. 33.250 ÷ 25 =
34. 34.17 × 15 =
35. 35.Check with nines: 87 × 37 = 3213. Correct or wrong? (a) correct (b) wrong
36. 36.316 − 97 =
37. 37.179 − 58 =
38. 38.14 × 18 =
39. 39.26 × 50 =
40. 40.89 + 71 + 33 + 25 =

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