Assess Yourself
How well do you understand the ideas in this lesson?
Goal:
Goal:
Show What You Know!
Are you ready to take this lesson's quiz? These questions will help you find out. Go back to the lesson if you do not know an answer.
Which shape does NOT have an area of 15 units\({\Large^2}\)?
Yes! This rectangle does not have an area of 15 \({\Large^2}\).
Sorry, that's not correct. Try using repeated addition to find the area.
Sorry, that's not correct. Did you count all the unit squares?
Sorry, that's not correct. This rectangle has an area of 15 units\({\Large^2}\).
Which shape has an area of 14 units\({\Large^2}\) and a length of 2 unit squares?
Sorry, that's not correct. This rectangle does not have a length of 2 unit squares.
Sorry, that's not correct. The top of this rectangle has a length of 3 unit squares.
Yes! This is the correct rectangle!
Sorry, that's not correct. Try using skip-counting to find the area.
What is the area of this rectangle?
- 25 square units
- 20 square units
- 65 square units
- 12 square units
Sorry, that’s not correct. Try recounting the unit squares.
Yes! This rectangle has an area of 20 \({\Large^2}\).
Sorry, that’s not correct. Can you use repeated addition to check your work?
Sorry, that’s not correct. Can you use a skip-counting sequence to check your answer?
Which rectangle has an area of 8 units\({\Large^2}\) and a length of 8 unit squares?
Sorry, that's not correct. Try using skip-counting to find the area.
Sorry, that's not correct. The top of this rectangle has a length of 4 unit squares.
Sorry, that's not correct. This rectangle does not have a length of 8 unit squares.
Yes! This is the correct rectangle!
Which shape does NOT have an area of 28 square units?
Sorry, that's not correct. This rectangle has an area of 28 units\({\Large^2}\).
Sorry, that's not correct. Try using repeated addition to check the area again.
Sorry, that's not correct. Did you count all the unit squares?
Yes! This rectangle has an area of 12 units\({\Large^2}\), not 28 units\({\Large^2}\).
Which shape does NOT have an area of 12 units\({\Large^2}\)?
Yes! This rectangle has an area of 4 units squared.
Sorry, that's not correct. Try using repeated addition to check the area again.
Sorry, that's not correct. Did you count all the squares?
Sorry, that's not correct. This rectangle has an area of 12 units\({\Large^2}\).
Which rectangle has an area of 36 units\({\Large^2}\) and a length of 12 unit squares?
Sorry, that's not correct. The top of this rectangle has a length of 6 unit squares.
Sorry, that's not correct. Try using skip-counting to find the area.
Yes! This is the correct rectangle.
Sorry, that's not correct. This rectangle does not have a length of 12 unit squares.
What is the length of the top of this rectangle?
- 14 unit squares
- 7 unit squares
- 4 unit squares
- 10 unit squares
Sorry, that's not correct. How many unit squares are in the top row?
Yes! This rectangle has 7 unit squares in its top row.
Sorry, that's not correct. Try counting the unit squares in the top row again!
Sorry, that's not correct. You can find the length by counting the unit squares in the top row of the rectangle.
Which shape does NOT have an area of 20 units\({\Large^2}\)?
Yes! This rectangle has an area of 10 units squared, not 20 units squared.
Sorry, that's not correct. Try using repeated addition to check the area again.
Sorry, that's not correct. This rectangle has an area of 20 units\({\Large^2}\).
Sorry, that's not correct. This rectangle has an area of 20 units\({\Large^2}\).
Which rectangle has an area of 50 square units and a length of 10 unit squares?
Sorry, that's not correct. Look for a rectangle with a length of 10 unit squares.
Sorry, that's not correct. This rectangle does not have an area of 50 square units.
Sorry, that's not correct. This rectangle does not have a length of 10 unit squares.
Yes! This is the correct rectangle.
Summary
Questions answered correctly:
Questions answered incorrectly: