Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 254 · 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. 1.17 + 84 + 53 + 21 =
2. 2.483 − 18 =
3. 3.9 + 5 + 3 + 3 + 7 =
4. 4.6 + 4 + 1 + 5 =
5. 5.1150 ÷ 25 =
6. 6.Check with nines: 669 + 945 = 1618. Correct or wrong? (a) wrong (b) correct
7. 7.574 − 16 =
8. 8.10% of 50 =
9. 9.199 + 77 =
10. 10.Check with nines: 40 × 78 = 3120. Correct or wrong? (a) wrong (b) correct
11. 11.6 + 1 + 4 + 3 + 3 =
12. 12.416 + 77 =
13. 13.Check with nines: 78 × 50 = 3904. Correct or wrong? (a) correct (b) wrong
14. 14.55 + 22 + 73 + 27 =
15. 15.300 ÷ 50 =
16. 16.Check with nines: 685 + 374 = 1059. Correct or wrong? (a) wrong (b) correct
17. 17.29 × 50 =
18. 18.89² =
19. 19.64 × 4 =
20. 20.18 × 14 =
21. 21.Check with nines: 837 + 559 = 1391. Correct or wrong? (a) correct (b) wrong
22. 22.18 × 11 =
23. 23.Best estimate of 98 × 3? (a) 3000 (b) 600 (c) 300 (d) 30
24. 24.28 × 50 =
25. 25.200 + 28 =
26. 26.20% of 20 =
27. 27.28 + 84 + 74 + 78 =
28. 28.250 ÷ 50 =
29. 29.73 + 83 + 60 + 32 =
30. 30.18 × 8 =
31. 31.344 + 28 =
32. 32.287 − 26 =
33. 33.Best estimate of 98 × 7? (a) 700 (b) 7000 (c) 70 (d) 1400
34. 34.61² =
35. 35.₹83.85 − ₹30.90 =
36. 36.442 − 26 =
37. 37.61² =
38. 38.76 × 4 =
39. 39.60 + 62 + 16 + 79 =
40. 40.₹84.80 − ₹40.90 =

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