Algorithms for adding and subtracting whole numbers
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
Use the standard algorithm to add 123+245.
📘 Worked solution
✓123+245=368.
And one from the hard end
Subtract 2000−1357 using regrouping, explaining the borrowing chain.
Solution shown after you try it in practice mode.
Work through all 30, easiest to hardest
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