Use units of time, including seconds, minutes, hours, and non-standard units, to describe duration
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
How many seconds are in half a minute?
📘 Worked solution
✓60 ÷ 2 = 30 seconds.
And one from the hard end
A student times an activity using the number of times they can write their name and counts about 40 repetitions, estimating this as roughly 2 minutes. Explain why this unit can be less reliable than a stopwatch, and what would happen to the count if the student wrote faster on a second try.
Solution shown after you try it in practice mode.
Work through all 30, easiest to hardest
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