# Substitution Sort

## Order the algebraic expressions according to their value with the given substitution.

##### Menu  BasicsLevel 1Level 2Level 3  Help  More Algebra

Drag the expressions left or right so that the five expressions are in order, largest on the left and smallest on the right, when the given value has been substituted.

 1 $$x=6$$ $$3x$$ $$x^2$$ $$9-x$$ $$\dfrac{24}{x}$$ $$15-\dfrac{30}{x}$$ ☐ ☐ ✓ ✗ 2 $$x=-2$$ $$3x$$ $$x^2$$ $$9-x$$ $$\dfrac{24}{x}$$ $$15-\dfrac{30}{x}$$ ☐ ☐ ✓ ✗ 3 $$x=0.5$$ $$3x$$ $$x^2$$ $$9-x$$ $$\dfrac{24}{x}$$ $$15-\dfrac{30}{x}$$ ☐ ☐ ✓ ✗ 4 $$x=1$$ $$3x$$ $$x^2$$ $$9-x$$ $$\dfrac{24}{x}$$ $$15-\dfrac{30}{x}$$ ☐ ☐ ✓ ✗ 5 $$x=-10$$ $$3x$$ $$x^2$$ $$9-x$$ $$\dfrac{24}{x}$$ $$15-\dfrac{30}{x}$$ ☐ ☐ ✓ ✗
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This is Substitution Sort level 2. You can also try:
Level 1 Level 3

## Instructions

Try your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help.

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## Go Maths

Learning and understanding Mathematics, at every level, requires learner engagement. Mathematics is not a spectator sport. Sometimes traditional teaching fails to actively involve students. One way to address the problem is through the use of interactive activities and this web site provides many of those. The Go Maths page is an alphabetical list of free activities designed for students in Secondary/High school.

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## Description of Levels

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Substitution - The basics, which might be a good place to start before doing this exercise.

Level 1 - Simple expressions

Level 2 - Moderate expressions

More on this topic including lesson Starters, visual aids, investigations and self-marking exercises.

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## Curriculum Reference

See the National Curriculum page for links to related online activities and resources.

## Help

If you are in any way unsure about substituting values into expressions it would probably be a good idea to start with the basic Substitution exercise.

The video below was made to support that exercise.

Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can double-click the 'Check' button to make it float at the bottom of your screen.

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