- AFalse
- BTrue
- COnly when both numbers are equal
- DOnly when the result is zero
Step-by-Step Solution
False. Subtraction is not closed on whole numbers — for example, 3 - 5 = -2, which is a negative integer, not a whole number.
Answer: A) False
Subtraction of two whole numbers always gives a whole number. (True or false?)
Class 6Whole NumbersWhole Numbers
Key idea: Closure: when an operation 'stays inside' the whole numbers
Adding two whole numbers always gives a whole number — addition is **closed** on whole numbers. Multiplying two whole numbers always gives a whole number — multiplication is **closed** too. But subtraction is **not** closed: 5 − 7 = −2, which is not a whole number. Division is also not closed: 7 ÷ 2 = 3.5, not a whole number. Closure is the property that lets us trust an operation never to take us 'outside' the world of whole numbers.
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