Determine what needs to be added to or subtracted from addition and subtraction expressions to make them equivalent
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 must be added to 3+4 to make it equal to 3+9?
📘 Worked solution
✓5 must be added (since 4+5=9).
And one from the hard end
The expression 60−___ is equivalent to 60−14−11−9−6. Find the missing number.
Solution shown after you try it in practice mode.
Work through all 30, easiest to hardest
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