Year 8
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Lesson details
Key learning points
- In this lesson, we will set up and solve inequalities in the context of word problems.
Licence
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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3 Questions
Q1.
This quiz will focus on one question. The rectangle below has a length x. Its height is 3cm longer. What is an algebraic expression for the height?
3
3x
x - 3
Q2.
What is an expression for the perimeter of the rectangle?
2x + 3
4x - 6
8x
Q3.
The perimeter is greater than or equal to 18cm. What values can x take?
Other
x > 3
x ≥ 2.5
3 Questions
Q1.
I'm thinking of a number (call it x). If I multiply it by 3 then add 4 to it, what expression do I get?
3(x + 4)
4(x + 3)
4x + 3
Q2.
I'm thinking of a number (call it x). If I multiply it by 3 then add 4 to it, my answer is less than 19. What range of values can my number take?
x < 4
x > 4
x > 5
Q3.
I'm thinking of a number, I subtract 4 from it and then divide it by 6. My number is greater than 2. What range of values can my number take?
x > 24
x > 36
x > 6