Perimeter inequalities
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Lesson details
Key learning points
- In this lesson, we will learn how to establish inequalities from perimeter expressions.
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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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5 Questions
Q1.
Perimeter is the total _____ of all sides of a shape. When the side lengths are written algebraically the perimeter can be written as an _______.
length, equation
weight, equation
weight, expression
Q2.
Which of the following is an expression for the perimeter of this shape? (Use the definitions from the lesson.)
4p + 2q
6p
6q
Q3.
Which of the following is an expression for the perimeter of this shape? (Use the definitions from the lesson.)
2p + 4q
6p
6q
Q4.
Which of the following is an expression for the perimeter of this image? (Use the definitions from the lesson.)
12p + 2q
16pq
6p + 10q
Q5.
Which of the following is an expression for the perimeter of this image? (Use the definitions from the lesson.)
12p + 2q
16pq
6p + 10q
5 Questions
Q1.
Fill in the gap: We can use an ______ to compare the lengths and perimeters of different lines and shapes.
Equality
Equation
Expression
Q2.
Using the image, decide which of the following is true.
r < p
r < q
r = q
Q3.
Which inequality best compares the expressions for the perimeters of the 2 shapes below?
8p + q < 6p + q
8q + p < 6q + p
8q + p > 6q + p
Q4.
Which inequality best compares the expressions for the perimeters of the 2 shapes below?
4p < 2p + q
4p < 3p
4p > 3p
Q5.
Which inequality best compares the expressions for the perimeters of the 2 shapes below?
7p + q < 7p + 2q
7p + q > 7p + 2q
7p + r > 7p + q + r