Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 41 · 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.Check with nines: 41 × 98 = 4026. Correct or wrong? (a) correct (b) wrong
2. 2.25 × 8 =
3. 3.47 × 50 =
4. 4.62 × 15 =
5. 5.86 + 36 + 59 + 15 =
6. 6.Check with nines: 20 × 40 = 806. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 93 × 27 = 2511. Correct or wrong? (a) wrong (b) correct
8. 8.9 + 5 + 5 + 4 =
9. 9.59² =
10. 10.Best estimate of 41 × 19? (a) 1600 (b) 8000 (c) 800 (d) 80
11. 11.Check with nines: 220 + 772 = 996. Correct or wrong? (a) correct (b) wrong
12. 12.15 + 34 + 39 + 25 =
13. 13.332 − 88 =
14. 14.350 ÷ 50 =
15. 15.1800 ÷ 50 =
16. 16.86 + 19 + 43 + 74 =
17. 17.17 × 12 =
18. 18.431 + 47 =
19. 19.Check with nines: 928 + 535 = 1463. Correct or wrong? (a) wrong (b) correct
20. 20.11 × 19 =
21. 21.220 + 78 =
22. 22.10% of 310 =
23. 23.253 + 28 =
24. 24.2 + 1 + 6 + 4 =
25. 25.69 + 47 + 68 + 16 =
26. 26.71 × 50 =
27. 27.376 + 68 =
28. 28.12 × 15 =
29. 29.Best estimate of 198 × 6? (a) 1200 (b) 120 (c) 2400 (d) 12000
30. 30.77 × 5 =
31. 31.384 + 17 =
32. 32.25% of 460 =
33. 33.51² =
34. 34.450 ÷ 50 =
35. 35.194 − 98 =
36. 36.4 + 4 + 3 + 7 =
37. 37.152 × 4 =
38. 38.46 + 60 + 64 + 63 =
39. 39.10% of 630 =
40. 40.Check with nines: 340 + 414 = 758. Correct or wrong? (a) wrong (b) correct

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