So, 360 less 318 is 42, which is 7 minutes. 53 minutes. 328 is 40 8s, and another 8. 41 minutes.
Combine multiplying, dividing, adding, and subtracting to break down a speed into minutes and back up into hours. Be fluent doing arithmetic with the factors of 60 (1,2,3,4,6,10,15,20,30,60).
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