Video Transcript
Seven plus seven plus seven plus
seven equals the missing number multiplied by four.
Seven plus seven plus seven plus
seven is repeated addition. We keep on adding seven. Let’s count the number of sevens we
need to add: one, two, three, four. Adding together four sevens is the
same as multiplying by four.
That means that seven multiplied by
four is the same as adding four sevens. So the missing number is seven.
Seven plus seven plus seven plus
seven equals seven multiplied by four.
