Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 668 · 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: 617 + 436 = 1053. Correct or wrong? (a) correct (b) wrong
2. 2.103 × 4 =
3. 3.10 × 15 =
4. 4.₹72.30 + ₹45.10 =
5. 5.2 + 3 + 7 + 2 =
6. 6.₹56.40 − ₹44.25 =
7. 7.12 × 15 =
8. 8.8 × 15 =
9. 9.Best estimate of 69 × 31? (a) 21000 (b) 4200 (c) 210 (d) 2100
10. 10.162 + 77 =
11. 11.125 ÷ 25 =
12. 12.Check with nines: 33 × 42 = 1386. Correct or wrong? (a) correct (b) wrong
13. 13.50% of 280 =
14. 14.250 ÷ 50 =
15. 15.28 × 15 =
16. 16.351 − 96 =
17. 17.12 × 13 =
18. 18.89² =
19. 19.Best estimate of 51 × 81? (a) 8000 (b) 4000 (c) 400 (d) 40000
20. 20.₹75.65 + ₹10.25 =
21. 21.76 + 17 + 43 + 26 =
22. 22.1350 ÷ 25 =
23. 23.364 + 69 =
24. 24.1 + 3 + 9 + 8 =
25. 25.Check with nines: 28 × 76 = 2122. Correct or wrong? (a) correct (b) wrong
26. 26.79 × 50 =
27. 27.23 + 86 + 67 + 19 =
28. 28.₹8.90 + ₹49.60 =
29. 29.41 × 8 =
30. 30.20% of 120 =
31. 31.1600 ÷ 50 =
32. 32.66 × 50 =
33. 33.489 + 78 =
34. 34.91² =
35. 35.29 × 8 =
36. 36.45 + 47 + 63 + 37 =
37. 37.16 + 61 + 88 + 11 =
38. 38.353 − 47 =
39. 39.189 + 58 =
40. 40.21² =

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