Grade 9 Math (MTH1W) · Development of Numbers and Number Sets

Describe the relationships between different subsets of the real number system

10 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest — every one with a full worked solution. Work through them free, no account needed.

Start the 10 questions Curriculum: MTH1W-B1.3

Sample: the first question, solved

Is the set of natural numbers a subset of the set of integers?

📘 Worked solution
Yes — every natural number is also an integer, so natural numbers are a subset of integers.

And one from the hard end

What is the relationship between integers and rational numbers?

Solution shown after you try it in practice mode.

Work through all 10, easiest to hardest

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