Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 526 · 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. 1.493 + 39 =
2. 2.26 × 15 =
3. 3.81² =
4. 4.2 + 8 + 6 + 2 =
5. 5.233 − 96 =
6. 6.15% of 330 =
7. 7.35 × 4 =
8. 8.422 − 27 =
9. 9.10% of 220 =
10. 10.44 + 22 + 15 + 74 =
11. 11.63 × 5 =
12. 12.87 × 50 =
13. 13.260 + 48 =
14. 14.327 + 18 =
15. 15.14 × 15 =
16. 16.500 ÷ 50 =
17. 17.54 + 87 + 39 + 52 =
18. 18.12 × 15 =
19. 19.15 × 19 =
20. 20.Check with nines: 44 × 51 = 2244. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 97 × 14 = 1358. Correct or wrong? (a) wrong (b) correct
22. 22.86 × 50 =
23. 23.Check with nines: 642 + 610 = 1252. Correct or wrong? (a) wrong (b) correct
24. 24.Best estimate of 39 × 21? (a) 8000 (b) 1600 (c) 80 (d) 800
25. 25.90 × 4 =
26. 26.38 × 15 =
27. 27.90 − 37 =
28. 28.Check with nines: 742 + 481 = 1223. Correct or wrong? (a) correct (b) wrong
29. 29.10% of 220 =
30. 30.24 + 72 + 87 + 73 =
31. 31.29 × 4 =
32. 32.Best estimate of 301 × 6? (a) 18000 (b) 1800 (c) 3600 (d) 180
33. 33.39² =
34. 34.3 + 4 + 3 + 6 =
35. 35.16 × 18 =
36. 36.Check with nines: 744 + 502 = 1246. Correct or wrong? (a) correct (b) wrong
37. 37.5% of 610 =
38. 38.28 + 25 + 72 + 39 =
39. 39.10% of 160 =
40. 40.91² =

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