Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 481 · 40 questions

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

1. 1.81 − 71 =
2. 2.Half of 44 =
3. 3.30 + ? = 100
4. 4.1013 − 977 =
5. 5.21 + 23 =
6. 6.219 − 175 =
7. 7.Double 75 =
8. 8.5 + ? = 10
9. 9.14 + ? = 100
10. 10.320 − 295 =
11. 11.521 − 498 =
12. 12.You buy a water bottle for ₹490 and pay with a ₹500 note. How much change do you get, in rupees?
13. 13.What is the remainder when 54 is divided by 5?
14. 14.30 + 41 =
15. 15.38 + 56 =
16. 16.326 − 286 =
17. 17.22² =
18. 18.96 − 62 =
19. 19.11 + 10 =
20. 20.Double 81 =
21. 21.Best estimate of 34 × 16? (a) 600 (b) 60 (c) 6000
22. 22.27 + 5 =
23. 23.A cricket match starts at 8:05 and the first innings ends at 9:00. How many minutes did the innings last?
24. 24.588 ÷ 7 =
25. 25.378 ÷ 7 =
26. 26.1023 − 998 =
27. 27.You buy a kite for ₹45 and a pen for ₹28. You pay with a ₹100 note. How much change do you get, in rupees?
28. 28.18² =
29. 29.6 + 7 =
30. 30.You buy a water bottle for ₹58 and pay with a ₹100 note. How much change do you get, in rupees?
31. 31.You start your homework at 8:15 and finish at 9:30. How many minutes did you work?
32. 32.A film starts at 8:10 and ends at 8:40. How many minutes long is the film?
33. 33.Best estimate of 148 + 303? (a) 200 (b) 400 (c) 600
34. 34.514 − 494 =
35. 35.Double 49 =
36. 36.120 laddoos are packed in boxes of 9. How many laddoos are left over?
37. 37.15 × 4 =
38. 38.48 + ? = 100
39. 39.Double 82 =
40. 40.35 + 9 =

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