Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 156 · 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. 1.90 ÷ 5 =
2. 2.296 − 78 =
3. 3.27 × 15 =
4. 4.267 + 79 =
5. 5.153 + 67 =
6. 6.56 × 15 =
7. 7.1475 ÷ 25 =
8. 8.78 × 5 =
9. 9.Best estimate of 39 × 59? (a) 240 (b) 2400 (c) 4800 (d) 24000
10. 10.3 + 3 + 8 + 2 + 2 =
11. 11.110 + 28 =
12. 12.1 + 3 + 5 + 7 =
13. 13.₹38.20 − ₹23.40 =
14. 14.5 × 15 =
15. 15.Check with nines: 706 + 331 = 1040. Correct or wrong? (a) correct (b) wrong
16. 16.36 × 50 =
17. 17.Check with nines: 47 × 35 = 1645. Correct or wrong? (a) correct (b) wrong
18. 18.₹28.05 + ₹39.30 =
19. 19.₹46.65 − ₹17.85 =
20. 20.5% of 170 =
21. 21.650 ÷ 25 =
22. 22.Best estimate of 22 × 81? (a) 160 (b) 3200 (c) 1600 (d) 16000
23. 23.144 × 4 =
24. 24.56 × 15 =
25. 25.Check with nines: 716 + 227 = 943. Correct or wrong? (a) wrong (b) correct
26. 26.6 + 3 + 2 + 7 + 3 =
27. 27.Best estimate of 79 × 71? (a) 560 (b) 56000 (c) 5600 (d) 11200
28. 28.Check with nines: 52 × 42 = 2188. Correct or wrong? (a) correct (b) wrong
29. 29.146 × 4 =
30. 30.69 × 4 =
31. 31.191 + 67 =
32. 32.75 × 5 =
33. 33.56 + 29 =
34. 34.3 + 1 + 7 + 1 =
35. 35.6 + 3 + 7 + 5 =
36. 36.1 + 3 + 9 + 6 + 1 =
37. 37.81² =
38. 38.28 × 4 =
39. 39.78 + 17 + 69 + 20 =
40. 40.69² =

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