Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 141 · 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. 1.34 × 4 =
2. 2.28 + 5 =
3. 3.24 + 26 =
4. 4.Double 56 =
5. 5.What is the remainder when 20 is divided by 3?
6. 6.44 × 4 =
7. 7.A cricket match starts at 6:00 and the first innings ends at 8:05. How many minutes did the innings last?
8. 8.88 + 3 =
9. 9.Best estimate of 89 × 89? (a) 810 (b) 81000 (c) 8100
10. 10.50% of ₹170 =
11. 11.You buy a notebook for ₹30 and a pen for ₹31. You pay with a ₹100 note. How much change do you get, in rupees?
12. 12.15 + 7 =
13. 13.You start your homework at 2:25 and finish at 5:35. How many minutes did you work?
14. 14.56 × 4 =
15. 15.11² =
16. 16.57 + 8 =
17. 17.30 + 29 =
18. 18.68 − 15 =
19. 19.What is the remainder when 69 is divided by 5?
20. 20.Half of 144 =
21. 21.294 ÷ 3 =
22. 22.You buy a pencil box for ₹311 and pay with a ₹500 note. How much change do you get, in rupees?
23. 23.Half of 160 =
24. 24.22² =
25. 25.15² =
26. 26.507 − 483 =
27. 27.32 × 8 =
28. 28.43 × 3 =
29. 29.24² =
30. 30.78 × 4 =
31. 31.115 − 96 =
32. 32.50 + ? = 100
33. 33.59 − 43 =
34. 34.You buy a bag of mangoes for ₹17 and a pen for ₹33. You pay with a ₹100 note. How much change do you get, in rupees?
35. 35.34 + 29 =
36. 36.13 + ? = 100
37. 37.50% of ₹50 =
38. 38.Best estimate of 34 × 83? (a) 24000 (b) 2400 (c) 240
39. 39.You buy a kite for ₹15 and a pen for ₹42. You pay with a ₹100 note. How much change do you get, in rupees?
40. 40.50% of ₹580 =

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