Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 615 · 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. 1.12 × 17 =
2. 2.200 ÷ 5 =
3. 3.19² =
4. 4.5 + 7 + 8 + 2 + 5 =
5. 5.Best estimate of 297 × 9? (a) 27000 (b) 270 (c) 5400 (d) 2700
6. 6.Check with nines: 536 + 452 = 991. Correct or wrong? (a) correct (b) wrong
7. 7.15 × 15 =
8. 8.59 × 15 =
9. 9.Best estimate of 29 × 59? (a) 18000 (b) 180 (c) 3600 (d) 1800
10. 10.Check with nines: 393 + 238 = 631. Correct or wrong? (a) correct (b) wrong
11. 11.Best estimate of 78 × 18? (a) 16000 (b) 1600 (c) 160 (d) 3200
12. 12.6 + 1 + 7 + 4 + 6 =
13. 13.2 + 1 + 3 + 7 + 7 =
14. 14.8 × 15 =
15. 15.Check with nines: 73 × 56 = 4088. Correct or wrong? (a) wrong (b) correct
16. 16.192 − 96 =
17. 17.151 + 17 =
18. 18.35 × 5 =
19. 19.27 + 64 + 15 + 22 =
20. 20.36 + 88 + 32 + 73 =
21. 21.7 + 4 + 7 + 3 =
22. 22.19 × 15 =
23. 23.66 + 69 + 40 + 43 =
24. 24.474 + 99 =
25. 25.41 × 5 =
26. 26.14 × 15 =
27. 27.Best estimate of 82 × 81? (a) 12800 (b) 64000 (c) 6400 (d) 640
28. 28.505 − 17 =
29. 29.58 + 87 =
30. 30.950 ÷ 25 =
31. 31.212 + 38 =
32. 32.57 × 50 =
33. 33.20% of 480 =
34. 34.Best estimate of 38 × 51? (a) 200 (b) 4000 (c) 20000 (d) 2000
35. 35.10% of 740 =
36. 36.Best estimate of 41 × 38? (a) 16000 (b) 3200 (c) 1600 (d) 160
37. 37.26 × 15 =
38. 38.109 × 4 =
39. 39.17 × 15 =
40. 40.1225 ÷ 25 =

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