Chapter 2 (NCERT) · Class 6 CBSE · MCQ Test
Whole Numbers MCQ Test — Class 6 CBSE
Practice 10 multiple-choice questions with instant answer reveal and explanations.
Whole Numbers — MCQ Questions
1Which is the smallest whole number?
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Answer: 0
Hint: Whole numbers start from 0.
Solution:
Whole numbers are: 0, 1, 2, 3, ...
The smallest whole number is 0.
2What is the successor of 17?
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Answer: 18
Hint: Successor means the number that comes just after.
Solution:
Successor = number + 1
Successor of 17: — 17 + 1 = 18
3What is the predecessor of 50?
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Answer: 49
Hint: Predecessor means the number that comes just before.
Solution:
Predecessor = number - 1
Predecessor of 50: — 50 - 1 = 49
4Find: 345 + 0
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Answer: 345
Hint: Adding 0 to any number gives the same number.
Solution:
This is the additive identity property.
Any number + 0 = the same number. — 345 + 0 = 345
5Find: 78 × 1
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Answer: 78
Hint: Multiplying any number by 1 gives the same number.
Solution:
This is the multiplicative identity property.
Any number × 1 = the same number. — 78 × 1 = 78
6Find: 25 × 0
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Answer: 0
Hint: Any number multiplied by 0 equals 0.
Solution:
Property: Any number × 0 = 0
Therefore: — 25 × 0 = 0
7Is 0 a natural number?
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Answer: No
Hint: Natural numbers start from 1. Whole numbers start from 0.
Solution:
Natural numbers: 1, 2, 3, 4, ...
Whole numbers: 0, 1, 2, 3, ...
0 is a whole number but not a natural number.
8Find: 12 + 8 + 5
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Answer: 25
Hint: Add the numbers step by step.
Solution:
Step 1: — 12 + 8 = 20
Step 2: — 20 + 5 = 25
9What property does this show: 3 + 5 = 5 + 3?
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Answer: Commutative
Hint: When the order of numbers changes but the result stays the same.
Solution:
a + b = b + a is the commutative property of addition.
3 + 5 = 5 + 3 = 8. Changing order does not change the sum.
10Find the next three numbers in the pattern: 2, 5, 8, 11, ...
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Answer: 14, 17, 20
Hint: Find the common difference between consecutive terms.
Solution:
Common difference: — 5 - 2 = 3
Next terms: — 11 + 3 = 14, 14 + 3 = 17, 17 + 3 = 20
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Tips for Whole Numbers MCQs
- 1Read each question carefully and identify what is being asked before looking at the options.
- 2Try to solve the problem mentally or on paper first, then match your answer with the options.
- 3Use elimination — rule out clearly wrong options to improve your chances even when unsure.
- 4Check units, signs, and edge cases — these are common traps in Whole Numbers MCQs.
- 5Review your mistakes after completing the test to build lasting understanding.
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