Substitution

Substitute the given numerical values into the algebraic expressions in this multi-level, self-marking quiz.

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This is level 7: Here are some mathematical expressions. Can you evaluate them if:

s = 2.4b = -7.2t = 4.8n = -9.6
 $$\sqrt{\frac{n}{s}+20}$$ $$\frac{t-2s}{n^2}$$ $$\frac{3t}{\sqrt{10(t-n)}}$$ $$5t+\sqrt{\frac{6n}{8b}}$$ $$\frac{n^3}{3}+294$$ $$\frac{s^2+t}{s^2-t}$$ $$s^2+b^2-n^2$$ $$(s-b)(n+t)$$ $$sbt - btn$$ $$\frac{sb-6}{5t}$$ $$s^2 \div \frac{n^2}{t^2}$$ $$\frac12s^2 + \frac13t - \frac14n^2$$
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This is Substitution level 7. You can also try:
Level 1 Level 2 Level 3 Level 4 Level 5 Level 6

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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Roman Numerals Jigsaw

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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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Friday, October 13, 2017

Joe Hunter,

Tuesday, February 4, 2020

"Very fun. Loved it from the fact that everyone gets different numbers so no-one can copy. Very good."

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Description of Levels

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Level 1 - Simple addition and subtraction - positive integers

Level 2 - Addition, subtraction and multiplication - positive integers

Level 3 - Indices - positive integers

Level 4 - Brackets - positive integers

Level 5 - Mixed expressions - positive integers

Level 6 - Mixed expressions - negative integers

Level 7 - Mixed expressions - positive and negative decimals

More on this topic including lesson Starters, visual aids and investigations.

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Curriculum Reference

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

Examples

You may also want to use a calculator to check your working. See Calculator Workout skill 13.

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