Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 178 · 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.Check with nines: 227 + 732 = 964. Correct or wrong? (a) wrong (b) correct
2. 2.11 + 22 + 13 + 82 =
3. 3.2 + 8 + 2 + 2 =
4. 4.92 + 29 =
5. 5.50% of 520 =
6. 6.9 + 2 + 9 + 8 =
7. 7.19² =
8. 8.Best estimate of 297 × 4? (a) 120 (b) 2400 (c) 12000 (d) 1200
9. 9.4 × 15 =
10. 10.90 − 77 =
11. 11.199 − 67 =
12. 12.49² =
13. 13.9 + 1 + 7 + 1 =
14. 14.32 × 8 =
15. 15.3 + 2 + 6 + 7 =
16. 16.10% of 410 =
17. 17.21 + 74 + 26 + 63 =
18. 18.Check with nines: 773 + 976 = 1749. Correct or wrong? (a) wrong (b) correct
19. 19.183 + 77 =
20. 20.25 × 15 =
21. 21.264 + 79 =
22. 22.75 + 31 + 39 + 66 =
23. 23.343 + 49 =
24. 24.3 + 7 + 3 + 8 + 2 =
25. 25.39² =
26. 26.Best estimate of 42 × 79? (a) 6400 (b) 320 (c) 32000 (d) 3200
27. 27.19 × 14 =
28. 28.Check with nines: 154 + 407 = 561. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 579 + 755 = 1335. Correct or wrong? (a) wrong (b) correct
30. 30.84 + 77 + 63 + 81 =
31. 31.16 × 14 =
32. 32.54 + 14 + 55 + 27 =
33. 33.281 + 39 =
34. 34.46 + 77 + 40 + 20 =
35. 35.28 × 15 =
36. 36.4 + 7 + 2 + 8 + 2 =
37. 37.64 + 40 + 51 + 80 =
38. 38.3 + 5 + 6 + 4 =
39. 39.81 + 39 =
40. 40.45 × 5 =

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