Mental Maths for Class 3 with Answers
Mental Maths for class 3 covers every type of mental maths questions for class 3 students.
In this post, you will find 95 mental maths questions for grade 3 students with answers.
Mental Maths
for Class 3 covers the following topics:
- Numbers
- Addition
- Subtraction
- Multiplication
- Division
- Fractions
- Shapes
- Measurement
- Time
- Money
- Mental Maths for Class 1
- Mental Maths for Class 2
- Mental Maths for Class 3
- Mental Maths for Class 4
- Mental Maths for Class 5
- Mental Maths for Class 6
- Mental Maths for Class 7
- Mental Maths for Class 8
Mental Maths for Class 3 with Answers
1. Write the number which has 6 thousands, 2 hundreds and 5 ones. ..................
2. Write the place value of 5 in 1546. ..........................
3. Write the greatest 4-digit number. ..........................
4. The predecessor of 2459 is ......................... and its successor is ...................... .
5. Form the largest 4-digit number using the digits in each flower only once. Now, arrange these numbers in ascending and descending order.
6. The smallest 4-digit number that can be formed using 0, 3, 5 and 1 is ........... .
7. If 284 is rounded off to the nearest hundred, it becomes ......................... .
8. Write the smallest 4-digit odd number. .........................
9. If a number ends with 0, 2, 4, 6 or 8, it is called an ......................... number.
10. Pair the objects and write odd (O) or even (E).
b. Descending order: ________________________________________
11. 340 + 690 is the same as ......................... .
a. 730 + 200
b. 850 + 280
c. 400 + 630
12. Which of the following gives the correct sum?
a. 999 + 0 = 998
b. 999 + 0 = 1000
c. 999 + 1 = 1000
13. The sum of the smallest 3-digit number and 99 is ...................... .
14. The sum of the greatest 2-digit number and the greatest 3-digit number is ...................... .
15. The sum of 99 and 1 is ...................... .
16. When we add the smallest 3-digit number to 0, the sum is ...................... .
17. Add: 999 + 99 + 9 = ...................... .
18. 243 + 483 is equal to ......................... .
a. 483 + 243
b. 443 + 384
c. 443 + 284
19. Which of the following is not
correct?
a. 811 + 89 = 900
b. 445 + 255 = 800
c. 295 + 105 = 400
20. Add the following with correct
rearrangement.
a. 12 + 135 + 88 + 265
b. 215 + 75 + 85 + 125
c. 99 + 109 + 101 + 391
d. 313 + 80 + 87 + 120
21. 658 – 608 is the same as ........................... .
a. 10 + 70
b. 28 + 22
c. 100 – 40
22. Hemant and Neha together have a total of 574 stamps. If Hemant has 319 stamps, then Neha has ........................... .
a. 259 stamps
b. 155 stamps
c. 255 stamps
23. The sum of two numbers is 892. If one of them is 475, then the other number is ................ .
24. 459 – 409 = ............ – 50
25. 5962 – ............ = 4962
26. The birth years of four of Riya’s friends are given below.
Nisha—2005
Ritu—2004
Ananya—2006
Preetha—2009
Based on this information, answer the following questions.
a. Who is the youngest in the group and who is the oldest?
..................................................................................................................................
b. How old will be Nisha and Preetha in 2023?
..................................................................................................................................
c. What is the difference between the ages of Ritu and Ananya?
.................................................................................................................................
27. Fill in the blanks.
a. 4762 – 1 = __________
b. 1932 – 1932 = _________
c. 9854 – 0 = _________
d. 4683 – 1000 = ________
28. Which of the following is correct?
a. 5782 – 2741 = 3141
b. 8291 – 3639 = 4752
c. 6214 – 4276 = 1938
29. Which of the following is incorrect?
a. 9467 – 4728 = 4739
b. 7356 – 2762 = 4694
c. 8401 – 5162 = 3239
30. Subtract the following.
a. 1000 – 465
b. 800 – 123
31. Which product from the following options is equal to 17 + 23?
a. 5 × 6
b. 8 × 5
c. 10 × 2
32. Which one of the following products lies between 70 and 80?
a. 8 × 7
b. 9 × 8
c. 7 × 10
33. Which one of the following is wrong?
a. 9 × 100 = 900
b. 20 × 200 = 400
c. 7 × 1000 = 7000
34. 3000 × 2 = (............ × ............) × 1000
35. 12 × 6 hundreds = ...................
36. Tick the product from the following options which is equal to 28 + 22.
a. 6 × 5
b. 10 × 4
c. 5 × 10
37. Tick one of the following products which lies between 55 and 60.
a. 6 × 9
b. 7 × 8
c. 9 × 8
38. There are 8 packets of 26 candles each. The total number of candles is ............ .
a. 218
b. 208
c. 228
39. 6 bags contain 25 candies each. The total number of candies is ............... .
a. 120
b. 180
c. 150
40. Megha buys 18 chocolates for her birthday party. Each chocolate costs ₹ 10. How much money did she pay for the chocolates? ........................
41.
56 ÷ 8 = _______
a. 5 b. 6
c. 7
42.
Which of the following values is between 100 and 110?
a. 77 ÷ 7 b. 618
÷ 6 c. 9918
÷ 9
43.
When 976 is divided by 10, the remainder is ______.
a. 6 b. 67
c. 9
44.
When a number divided by 4 gives the quotient as 8, then the number is ______.
a. 30 b.
32 c. 2
45.
475 ÷ 1 = ______
a. 1 b. 0
c. 475
46. Manish bought 3 cans of fruit juice and drank 2 cans out of it. The fraction of fruit juice cans consumed by him is ...................... .
a. 2/5
b. 1/3
c. 2/3
47. In a mathematics test, Piya scored 8 out of 10. The fraction of marks scored by Piya is .............................. .
a. 8/10
b. 2/10
c. 2/8
48. There are 9 chocolates. Megha eats 4 of them. The fraction of chocolates eaten by Megha is .............................. .
a. 5/9
b. 4/9
c. 9/13
49. There are 24 mangoes in a basket. Half of them are ripe. The number of ripe mangoes in the basket is .............................. .
a. 10
b. 11
c. 12
50. Half of half is .............................. .
51. One-fourth of 28 = ..............................
52. One-third of 39 = ……………………..
53. Two-thirds of 18 = ……………….
54. Out of 36 candies, one-fourth has been eaten. The number of remaining candies is ....................... .
55. Nisha had 25 marbles. She gave three-fifths of the marbles to her brother. How many marbles did she give to her brother? ………………..
56. State whether the outer surface of the following objects is flat or curved.
Straight/Curved Straight/Curved Straight/Curved
58. What is the shape of a water bottle? _____________________
59. What is the shape of a carrot? ___________________
60. How many end points are there in a line segment? ________________
61. How many end points are there in a ray? _____________________
62. How many geometrical pieces does a tangram hold? ______________
63. If east is the opposite of west, what is the opposite of north? _____________
64. How many faces are there in a sphere? _______________
65. How many vertices are there in a cylinder? ______________
66. Which item is heavier? Write the correct answer in the space provided.
a. An eraser or half kg of potatoes: .........................................................
b. One kg of rice or a toothbrush: .........................................................
c. A cow or a dog: .........................................................
d. A table of a school bag: …………………………………….
67. Which unit would you use to weigh the following things?
a. A pencil: ...........
b. A school bag: ...........
c. A geometry box: ...........
d. A packet of flour: ...........
e. A mobile phone: ...........
f. A bike: ...........
68. Tick the object whose weight is greater than 1 kg.
a. A television
b. A pair of socks
c. A candle
d. An elephant
69. Tick the object whose weight is less than 1 kg.
a. A gas cylinder
b. A car
c. A matchbox
d. A lunchbox
70. Which unit would you use to measure the following lengths?
a. The length of a saree
b. The length of your classroom
c. The length of a pencil
d. The height of a tree
71. Fill in the blanks.
a. 1 kilogram = ........... grams
b. 3 litres = ........... mL
c. 8 kilometres = ........... metres
d. 4 kilograms = ........... grams
72. Which unit would you use to measure the capacity of the following objects?
a. A cup: ………………
b. A tank: ………………….
c. A bucket: …………...
d. A spoon: ……………….
73. If the minute hand is at 9 and the hour hand is between 4 and 5, we say that the time is ............................ .
a. quarter past 4
b. quarter to 5
c. quarter to 4
74. The adjoining clock shows ............................ .
89. The pen costs .................... more than the eraser.
a. ₹ 5
b. ₹ 10
c. ₹ 15
90. The cost of 2 pencils and .................... erasers are the same.
a. 3
b. 4
c. 5
91. The cost of 3 pens and 1 eraser is ................... .
a. ₹ 40
b. ₹ 45
c. ₹ 50
92. ______ ₹ 50 notes make ₹ 400.
a. 6
b. 7
c. 8
93. Tick the incorrect sentence.
a. 5 two-rupee coins make ₹ 10.
b. 4 five-rupee coins make ₹ 25.
c. 10 one-rupee coins make ₹ 10.
d. 8 five-rupee coins make ₹ 40.
94. ₹ 15 is ……………… ₹ 20.
a. greater than
b. less than
c. equal to
95. Four ₹ 5 notes make ………………. .
a. ₹ 15
b. ₹ 20
c. ₹ 25
ANSWERS
1. a. Even b. Even
c. Odd
2. 5407 3. 300
4. 9999 5. 1458, 1460
6. 1035 7. 300
8. 1001 9. Even
10. 7440,
9980, 6421, 7641
a. 6421, 7440, 7641, 9980
b. 9980, 7641, 7440, 6421
11. c 12. C
13. 199 14. 1098
15. 100 16. 100
17.
1107 18. A
19. b
20. a.
500 b. 500
c. 700 d. 600
21. b 22. c
23. 417 24. 100
25.
1000
26. a. Youngest:
Preetha; Oldest: Ritu
b. Nisha: 18 years; Preetha: 14 years
c. 2 years
27. a.
4761 b. 0
c. 9854 d. 3683
28. c 29. b
30. a.
535 b. 677
31. b 32. b
33. b 34. 3, 2
35.
7200 36. c
37. b 38. b
39. c 40. ₹ 180
41. c 42. b 43. a
44. b 45. c
46. c 47. a
48. b 49. c
50. ¼ 51. 7
52. 13 53. 12
54. 27 55. 15
56. Curved,
Flat, Curved
57. Straight,
Curved, Straight
58. Cylinder 59. Cone
60. Two 61. One
62.
Seven 63. South
64. One 65. Zero
66. a. Half
kg of potatoes
b. One kg of rice
c. A cow d. A table
67. a. Gram b. Kilogram
c. Gram d. Kilogram
e.
Gram f. Kilogram
68. a. √ b. X
c.
X d. √
69. a. X b. X
c. √ d. √
70. a. Metre b. Metre
c. Centimetre d. Metre
71. a. 1000 b. 3000
c. 8000 d. 4000
72. a. mL b. L
c. L d. mL
73. b 74. b
75. c 76. b
77. c 78. a
79. b 80. b
81. a 82. c
83. c 84. a
85. b 86. b
87. c 88. a
89. b 90. b
91. c 92. c
93. b 94. b
95. b
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