Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 466 · 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. 1.11 × 15 =
2. 2.25% of 440 =
3. 3.19² =
4. 4.1 + 9 + 5 + 8 + 3 =
5. 5.173 + 27 =
6. 6.20% of 120 =
7. 7.375 + 97 =
8. 8.5% of 810 =
9. 9.Best estimate of 21 × 72? (a) 2800 (b) 1400 (c) 14000 (d) 140
10. 10.12 × 8 =
11. 11.Check with nines: 322 + 428 = 744. Correct or wrong? (a) wrong (b) correct
12. 12.45 + 55 + 22 + 38 =
13. 13.₹94.70 + ₹9.85 =
14. 14.740 ÷ 5 =
15. 15.125 × 4 =
16. 16.₹58.25 − ₹11.70 =
17. 17.30 + 78 =
18. 18.20% of 210 =
19. 19.464 + 18 =
20. 20.12 × 19 =
21. 21.116 × 4 =
22. 22.69 + 76 + 39 + 62 =
23. 23.Check with nines: 305 + 844 = 1149. Correct or wrong? (a) correct (b) wrong
24. 24.35 + 22 + 77 + 78 =
25. 25.16 × 15 =
26. 26.Check with nines: 39 × 79 = 3073. Correct or wrong? (a) wrong (b) correct
27. 27.825 ÷ 25 =
28. 28.Best estimate of 71 × 19? (a) 140 (b) 14000 (c) 1400 (d) 2800
29. 29.₹47.80 − ₹23.70 =
30. 30.39² =
31. 31.62 × 5 =
32. 32.Best estimate of 199 × 6? (a) 2400 (b) 12000 (c) 1200 (d) 120
33. 33.Best estimate of 78 × 49? (a) 8000 (b) 400 (c) 4000 (d) 40000
34. 34.21 × 15 =
35. 35.14 × 4 =
36. 36.20% of 530 =
37. 37.337 − 99 =
38. 38.58 + 26 + 79 + 17 =
39. 39.189 − 97 =
40. 40.25% of 300 =

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