Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 973 · 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. 1.95 ÷ 5 =
2. 2.1% of 350 =
3. 3.8 + 1 + 2 + 5 + 4 =
4. 4.Check with nines: 41 × 77 = 3161. Correct or wrong? (a) correct (b) wrong
5. 5.285 − 16 =
6. 6.Best estimate of 902 × 8? (a) 7200 (b) 14400 (c) 720 (d) 72000
7. 7.10% of 520 =
8. 8.Best estimate of 103 × 7? (a) 700 (b) 70 (c) 1400 (d) 7000
9. 9.Best estimate of 399 × 3? (a) 12000 (b) 120 (c) 1200 (d) 2400
10. 10.20% of 650 =
11. 11.41² =
12. 12.Best estimate of 402 × 9? (a) 3600 (b) 36000 (c) 360 (d) 7200
13. 13.144 + 37 =
14. 14.55 + 17 =
15. 15.Best estimate of 798 × 7? (a) 56000 (b) 5600 (c) 11200 (d) 560
16. 16.Best estimate of 803 × 4? (a) 6400 (b) 32000 (c) 320 (d) 3200
17. 17.980 ÷ 5 =
18. 18.Check with nines: 712 + 953 = 1665. Correct or wrong? (a) wrong (b) correct
19. 19.19 × 15 =
20. 20.15% of 860 =
21. 21.53 × 50 =
22. 22.24 × 4 =
23. 23.27 × 15 =
24. 24.6 + 8 + 3 + 4 + 1 =
25. 25.11 × 13 =
26. 26.38 × 15 =
27. 27.Best estimate of 18 × 39? (a) 1600 (b) 8000 (c) 800 (d) 80
28. 28.59² =
29. 29.62 × 15 =
30. 30.13 × 15 =
31. 31.650 ÷ 50 =
32. 32.11 × 11 =
33. 33.60 × 5 =
34. 34.11 + 88 + 83 + 79 =
35. 35.Check with nines: 691 + 277 = 973. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 38 × 81 = 3070. Correct or wrong? (a) wrong (b) correct
37. 37.10% of 600 =
38. 38.74 × 50 =
39. 39.224 − 66 =
40. 40.Best estimate of 301 × 7? (a) 4200 (b) 2100 (c) 210 (d) 21000

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