AQA · Mathematics · 8300
GCSE Maths: Algebra: changing the subject
Algebra · AQA GCSE Maths (8300). Cards are generated from the Corbettmaths textbook exercise and practice questions for Algebra: changing the subject (Corbettmaths Video 7), and every card links back to the exact page it came from. Practice tests generate fresh variations of these questions, so the numbers change every attempt. Source material © Corbettmaths — used with attribution.
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What is the first step to make y the subject of y + w = c?
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Subtract w from both sides to get y = c − w.
What is the result when making y the subject of 3y = c?
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y = c/3. Divide both sides by 3.
What is the result when making y the subject of y² = s?
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y = √s. Take the square root of both sides.
What is the result when making r the subject of c = 2πr?
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r = c/(2π). Divide both sides by 2π.
What is the result when making d the subject of e = d + 5?
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d = e − 5. Subtract 5 from both sides.
What is the result when making w the subject of t = w/2?
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w = 2t. Multiply both sides by 2.
What is the result when making w the subject of y = 3w − a?
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w = (y + a)/3. Add a to both sides, then divide by 3.
What is the result when making u the subject of v = u + 10t?
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u = v − 10t. Subtract 10t from both sides.
What is the result when making t the subject of v = u + 10t?
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t = (v − u)/10. Subtract u from both sides, then divide by 10.
What is the result when making x the subject of y = k/x?
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x = k/y. Multiply both sides by x, then divide both sides by y.
What is the result when making y the subject of k = y³ + a?
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y = ³√(k − a). Subtract a from both sides, then take the cube root.
What is the result when making a the subject of a² + b² = c²?
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a = √(c² − b²). Subtract b² from both sides, then take the square root.
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