Estimation (Edexcel GCSE Maths): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What symbol is used to show that an answer is approximately equal to another value?
What symbol is used to show that an answer is approximately equal to another value?
How many significant figures should you round each number to when using the basic estimation method?
How many significant figures should you round each number to when using the basic estimation method?
1 significant figure
Estimate using 1 s.f. rounding.
Estimate using 1 s.f. rounding.
Estimate using 1 s.f. rounding.
Estimate using 1 s.f. rounding.
When dividing by decimals, what trick makes estimation easier?
When dividing by decimals, what trick makes estimation easier?
Multiply both numbers by same amount
Using laws of indices, can be estimated as which calculation?
Using laws of indices, can be estimated as which calculation?
What value should be rounded to for quick estimates?
What value should be rounded to for quick estimates?
Estimate when by rounding and to 1 s.f.
Estimate when by rounding and to 1 s.f.
What is an underestimate?
What is an underestimate?
Estimated answer is smaller than true
What is an overestimate?
What is an overestimate?
Estimated answer is larger than true
In exams, what does 'give a reason' mean for estimation questions?
In exams, what does 'give a reason' mean for estimation questions?
Explain rounding direction & its effect
Why is estimation particularly useful on non-calculator exam papers?
Why is estimation particularly useful on non-calculator exam papers?
Exact calculations too time-consuming