5 questions0m 0s
Learn the skill
Make equal groups. Check your result by multiplying the number of full groups by the group size and adding the leftover. For trips or boxes that must hold everything, a leftover may need one extra group.
Worked example
Put seventeen buttons into bags of five. Three full bags use fifteen buttons, with two left: 3 x 5 + 2 = 17. The leftover is smaller than the five buttons needed for another full bag.