Math Problem of the Week - Lower Elementary - July 11, 2021 to July 17, 2021

Lower Elementary: 

Question: Avery is making a fall scene collage out of paper shapes in art class. She cuts a piece of construction paper that is 10 inches long and 10 inches wide into 1-in squares. Next, she cuts each square in half to make paper triangles. How many paper triangles does Avery have? 

Answer: 200 paper triangles

Solution: If Avery cuts the paper into 1-inch strips,  she will have 10 strips of paper. If she cuts each strip into 1-inch squares, she will have 10 for each strip. That means that she will have 10 × 10 = 100 squares. If she then cuts each square in half to make 2 triangles, she will have 100 × 2 = 200 paper triangles.