Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 594 · 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. 1.20 × 50 =
2. 2.11 + 39 + 45 + 71 =
3. 3.60 × 15 =
4. 4.3 + 7 + 8 + 6 =
5. 5.1350 ÷ 25 =
6. 6.875 ÷ 25 =
7. 7.2 + 3 + 8 + 8 + 8 =
8. 8.1 + 4 + 6 + 8 =
9. 9.79² =
10. 10.98 − 16 =
11. 11.600 ÷ 50 =
12. 12.71² =
13. 13.355 ÷ 5 =
14. 14.298 + 47 =
15. 15.7 × 15 =
16. 16.Best estimate of 71 × 21? (a) 14000 (b) 140 (c) 1400 (d) 2800
17. 17.17 × 8 =
18. 18.84 + 27 + 87 + 34 =
19. 19.₹30.55 − ₹15.65 =
20. 20.229 + 18 =
21. 21.65 × 8 =
22. 22.248 − 39 =
23. 23.79 × 4 =
24. 24.448 − 27 =
25. 25.53 + 72 + 46 + 80 =
26. 26.2 + 1 + 8 + 4 =
27. 27.6 + 4 + 8 + 4 =
28. 28.12 × 16 =
29. 29.Check with nines: 365 + 153 = 518. Correct or wrong? (a) wrong (b) correct
30. 30.34 × 8 =
31. 31.8 × 15 =
32. 32.441 + 78 =
33. 33.Check with nines: 407 + 367 = 774. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 135 + 629 = 764. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 30 × 17 = 511. Correct or wrong? (a) correct (b) wrong
36. 36.298 − 76 =
37. 37.Best estimate of 52 × 38? (a) 200 (b) 20000 (c) 2000 (d) 4000
38. 38.18 + 35 + 57 + 24 =
39. 39.52 × 15 =
40. 40.₹57.55 − ₹29.20 =

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