Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 47 · 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. 1.592 − 89 =
2. 2.25 × 5 =
3. 3.8 + 9 + 1 + 2 =
4. 4.₹44.05 − ₹23.75 =
5. 5.15 × 15 =
6. 6.Check with nines: 21 × 96 = 2013. Correct or wrong? (a) correct (b) wrong
7. 7.39² =
8. 8.30 × 5 =
9. 9.8 + 7 + 1 + 2 =
10. 10.38 × 15 =
11. 11.59 × 15 =
12. 12.444 − 67 =
13. 13.85 + 89 + 48 + 57 =
14. 14.₹41.45 + ₹23.55 =
15. 15.Best estimate of 797 × 6? (a) 4800 (b) 480 (c) 9600 (d) 48000
16. 16.Check with nines: 92 × 27 = 2483. Correct or wrong? (a) wrong (b) correct
17. 17.17 × 13 =
18. 18.27 + 59 + 36 + 73 =
19. 19.50% of 220 =
20. 20.434 + 68 =
21. 21.6 × 15 =
22. 22.20% of 170 =
23. 23.59 × 15 =
24. 24.12 + 20 + 52 + 66 =
25. 25.208 + 18 =
26. 26.79² =
27. 27.Check with nines: 35 × 12 = 425. Correct or wrong? (a) correct (b) wrong
28. 28.174 + 17 =
29. 29.Check with nines: 899 + 191 = 1089. Correct or wrong? (a) wrong (b) correct
30. 30.13 × 5 =
31. 31.94 × 50 =
32. 32.Check with nines: 405 + 290 = 687. Correct or wrong? (a) correct (b) wrong
33. 33.860 ÷ 5 =
34. 34.4 + 7 + 6 + 4 =
35. 35.63 × 50 =
36. 36.116 − 57 =
37. 37.357 − 86 =
38. 38.27 × 8 =
39. 39.16 × 15 =
40. 40.1 + 3 + 4 + 6 + 8 =

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