Recall addition facts for numbers up to 20, and related subtraction facts
30 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest, every one with a full worked solution. Work through all 30 with your weekly-lesson access code.
Sample: the first question, solved
What is 4+5?
📘 Worked solution
✓9.
And one from the hard end
Find two different addition facts (using numbers 0–20) that both equal 18, then identify each one's matching subtraction fact.
Solution shown after you try it in practice mode.
Work through all 30, easiest to hardest
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