Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 733 · 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. 1.5 + 9 + 5 + 4 =
2. 2.226 + 27 =
3. 3.230 + 59 =
4. 4.51² =
5. 5.19 × 14 =
6. 6.106 × 4 =
7. 7.302 − 78 =
8. 8.11 × 16 =
9. 9.35 × 15 =
10. 10.5 + 8 + 3 + 5 + 5 =
11. 11.438 + 19 =
12. 12.116 × 4 =
13. 13.227 + 98 =
14. 14.9 × 15 =
15. 15.Check with nines: 527 + 938 = 1465. Correct or wrong? (a) correct (b) wrong
16. 16.Best estimate of 203 × 9? (a) 18000 (b) 3600 (c) 180 (d) 1800
17. 17.5% of 480 =
18. 18.Check with nines: 57 × 54 = 3078. Correct or wrong? (a) correct (b) wrong
19. 19.₹51.15 + ₹8.30 =
20. 20.₹61.80 − ₹34.10 =
21. 21.Best estimate of 71 × 28? (a) 210 (b) 2100 (c) 21000 (d) 4200
22. 22.85 + 27 + 21 + 12 =
23. 23.Best estimate of 82 × 28? (a) 240 (b) 24000 (c) 2400 (d) 4800
24. 24.41 × 15 =
25. 25.41 × 15 =
26. 26.125 × 4 =
27. 27.91² =
28. 28.Best estimate of 798 × 8? (a) 6400 (b) 12800 (c) 64000 (d) 640
29. 29.39² =
30. 30.Check with nines: 500 + 157 = 657. Correct or wrong? (a) wrong (b) correct
31. 31.15% of 180 =
32. 32.Check with nines: 15 × 63 = 943. Correct or wrong? (a) correct (b) wrong
33. 33.Best estimate of 22 × 62? (a) 2400 (b) 1200 (c) 12000 (d) 120
34. 34.75 + 18 =
35. 35.18 × 15 =
36. 36.₹86.85 − ₹49.90 =
37. 37.219 − 36 =
38. 38.393 + 39 =
39. 39.42 × 4 =
40. 40.19 × 15 =

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