Kazu split up the area of a rectangle to help him solve the division equation 2 , 439 ÷ 4 = ? 2,439÷4=?2, comma, 439, divided by, 4, equals, question mark. He splits the rectangle into parts that are easy to divide by 4 44 and a remainder: Area model split into 3 parts, each with a width of 4 units. From top to bottom the parts have a height of A units and an area of 2,400 square units; a height of B units and an area of 36 square units; and an unlabeled height and an area of 3 square units. A brace labeled H spans the top 2 parts. 2 , 400 square units 2,400 square units 36 square units 36 square units 3 square units 3 square units 4 units 4 units a a b b h h Complete the equations. a = a=a, equals units b = b=b, equals units h = h=h, equals units 2 , 439 ÷ 4 = 2,439÷4=2, comma, 439, divided by, 4, equals remainder