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On a number line of whole numbers, which of these lies to the LEFT of 205?

Class 6Whole NumbersWhole Numbers
  • A206
  • B204
  • C250
  • D205

Step-by-Step Solution

Whole numbers grow as you move right, so anything to the left of 205 must be smaller than 205. Of the choices only 204 is smaller. Both 206 and 250 are larger and therefore lie to the right, and 205 marks the point itself.
Answer: B) 204

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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