Molla is making greeting cards for 5 of her friends each card is to have 4 ribbons what is the number of ribbons used?

The answer is 20 because five times four is 20 so all you do is multiple

5 cards, 4 ribbons each Card 1 - 4 ribbons Card 2 - 4 ribbons Card 3 - 4 ribbons Card 4 - 4 ribbons Card 5 - 4 ribbons Add all ribbons up, 4+4+4+4+4 Or 4 ribbons x 5 cards ... 4x5=20