Mathematicians can use numbers to join, take away, or fair share. Look 👀 at the picture and listen👂 to this story: I went to the farmers market. I bought 4 cartons of raspberries and 5 cartons of blueberries. How many cartons of berries did I buy in all? Click below and use the to draw circles to show how many and write the numeral! Tap the to finish.