Using algebra (AQA GCSE Maths): Quizzes

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Using algebra
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Practise the questions

10 questions from this quiz

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What does using algebra mean?

Applying symbols & letters to solve

When is using algebra particularly useful?

When guessing takes too long

Which letters are usually chosen to represent unknown quantities?

AA, xx, or nn

What is the key to using algebra effectively?

Translating words into maths

In the cards problem, if card B is twice card A and card C is A+5A + 5, what is A+B+CA + B + C?

4A+54A + 5

How many counter-examples are needed to prove an algebraic statement false?

Only one

For n=3n = 3, what is the value of 2n2+32n^2 + 3?

21

Why is n=3n = 3 a counter-example for '2n2+32n^2 + 3 is always prime'?

21 = 3 × 7 (not prime)

How should you check your solutions in algebra problems?

Substitute back into original

When looking for counter-examples, what values should you try first?

Small whole numbers

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