3rd Grade Math E2

Part A: The rectangular garden at Oakwood Elementary is represented in the figure. The perimeter of the garden is 132 yards. What is the missing side length, in yards, in the figure?

• 25 yards

• 30 yards

• 28 yards

• 34 yards

Part B: Oakwood Elementary builds a new rectangular garden with the same perimeter of 132 yards, but the side lengths are different. Which of these could be the side lengths of the new garden?

• 24 yards by 42 yards

• 25 yards by 41 yards

• 30 yards by 36 yards

• 27 yards by 40 yards

Ken draws a rectangle with an area of 48 square inches. The width of the rectangle is 6 inches. What is the length, in inches, of Ken’s rectangle?

• 7 inches

• 8 inches

• 9 inches

• 10 inches

Lena has different colored buttons as shown. She wants to determine the total number of buttons she has altogether.

• 24 blue

• 22 orange

• 34 red

• 30 yellow

Part A: Lena explains there are a total of 950 buttons because 9 + 5 + 0 = 14 in the ones place, so she writes down 14. Then 2 + 2 + 3 + 0 = 7 in the tens place, so she writes down 7 in front of the 14. Explain why Lena’s reasoning is incorrect. Find the total number of buttons she has altogether. Enter your answer and your explanation.

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Part B: Lena explains there are 30 more red buttons than orange buttons because the smaller number is always subtracted from the larger number. So she got 2 – 1 = 1 in the ones place and 3 – 2 = 1 in the tens place. Explain why Lena’s reasoning is incorrect. Find how many more red buttons than orange buttons she has. Enter your answer and your explanation.

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The first 10 presidents of the United States were born in four states. The bar graph shows the number of presidents born in each state.

Part A: How many more presidents were born in Massachusetts than in South Carolina? Enter your answer in the box.

Part B: What is the difference between the number of presidents born in Virginia and the number of presidents born in New York and Massachusetts together? Enter your answer in the box