Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 675 · 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.Best estimate of 799 × 5? (a) 4000 (b) 40000 (c) 400 (d) 8000
2. 2.900 ÷ 50 =
3. 3.58 × 15 =
4. 4.Best estimate of 697 × 4? (a) 2800 (b) 28000 (c) 280 (d) 5600
5. 5.137 × 4 =
6. 6.91² =
7. 7.8 + 8 + 9 + 9 + 1 =
8. 8.2 + 6 + 9 + 1 =
9. 9.Check with nines: 518 + 775 = 1293. Correct or wrong? (a) wrong (b) correct
10. 10.16 × 50 =
11. 11.29² =
12. 12.49² =
13. 13.33 × 15 =
14. 14.448 − 56 =
15. 15.545 − 47 =
16. 16.362 + 59 =
17. 17.20 × 5 =
18. 18.Check with nines: 930 + 197 = 1130. Correct or wrong? (a) correct (b) wrong
19. 19.85 + 27 =
20. 20.277 + 78 =
21. 21.5 + 1 + 7 + 3 =
22. 22.600 ÷ 25 =
23. 23.325 + 88 =
24. 24.43 × 15 =
25. 25.Check with nines: 74 × 45 = 3329. Correct or wrong? (a) wrong (b) correct
26. 26.71² =
27. 27.19² =
28. 28.50 + 71 + 35 + 47 =
29. 29.15 × 11 =
30. 30.₹61.90 + ₹48.10 =
31. 31.11 × 19 =
32. 32.1 + 4 + 3 + 6 =
33. 33.87 − 37 =
34. 34.Check with nines: 79 × 34 = 2686. Correct or wrong? (a) wrong (b) correct
35. 35.8 + 3 + 1 + 9 + 7 =
36. 36.Check with nines: 89 × 40 = 3560. Correct or wrong? (a) correct (b) wrong
37. 37.50 × 15 =
38. 38.Check with nines: 959 + 152 = 1111. Correct or wrong? (a) wrong (b) correct
39. 39.56 × 4 =
40. 40.61² =

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