Algebra - Numbas at mathcentre.ac.uk

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Changing the subject of a formula: reversing powers and more basic operations	13 Mar 2024, 5:47 a.m.
Changing the subject of a formula	11 Mar 2024, 9:49 a.m.
Changing the subject of a formula: reversing multiplication, division and addition or subtraction	11 Mar 2024, 9:17 a.m.
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Standard high school algebra questions. Using symbols for unknown quantities, expressions involving such symbols, factors, solving equations, inequalties, indices, binomial products, solving quadratic equations, simultaneous equations

Project activity

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Ben Brawn on Distributive law: expanding one set of brackets: student types entire answer 2 years, 5 months ago

Gave some feedback: Should not be used

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Ben Brawn on Distributive law: expanding one set of brackets: student types entire answer 2 years, 5 months ago

Gave some feedback: Ready to use

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Ben Brawn on Distributive law: expanding one set of brackets: student types entire answer 2 years, 5 months ago

Gave some feedback: Should not be used

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Ben Brawn copied Distributive law: expanding one set of brackets to Distributive law: expanding one set of brackets: student types entire answer 2 years, 5 months ago

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Ben Brawn on Substituting values into algebraic expressions 2 years, 5 months ago

Gave some feedback: Ready to use

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Ben Brawn on Substituting values into algebraic expressions 2 years, 5 months ago

Gave some feedback: Should not be used

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Ben Brawn commented on Substituting values into algebraic expressions 2 years, 5 months ago

Changed from multi part question to single random question, added a fraction question in too.

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Ugur Efem on Algebraic fractions: operations involving algebraic fractions 2 years, 5 months ago

Gave some feedback: Ready to use

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Ugur Efem on Algebraic fractions: operations involving algebraic fractions 2 years, 5 months ago

Gave some feedback: Needs to be tested

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Ben Brawn on Reversed subtraction 4 years, 9 months ago

Gave some feedback: Ready to use

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Paul Decuypere on Solving a quadratic by using the quadratic formula - integer coefficients 5 years, 1 month ago

Gave some feedback: Ready to use

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Ben Brawn commented on Reversed subtraction 5 years, 9 months ago

Thanks Joshua. I have just removed the extra options so there is only, equivalent and not equivalent.

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Joshua Capel commented on Reversed subtraction 5 years, 9 months ago

When the fractions are not equivalent in part (b) they are of the form z=(a-b)/(c-d) and z=(b-a)/(d+c) respectively.

In this case the answer requires the selection of the option "not equivalent! One is the negative of the other.", but this is not true.

I think the option "not equivalent! One is the negative of the other." should be incorrect in both cases (but this will change the number of correct options between the two types of question).