Asha worked out
$$ rac{326.8 imes (6.94 - 3.4)}{59.4}$$
She got an answer of 19.5, correct to 3 significant figures - OCR - GCSE Maths - Question 21 - 2018 - Paper 1
Question 21
Asha worked out
$$ rac{326.8 imes (6.94 - 3.4)}{59.4}$$
She got an answer of 19.5, correct to 3 significant figures.
Write each number correct to 1 significant f... show full transcript
Worked Solution & Example Answer:Asha worked out
$$ rac{326.8 imes (6.94 - 3.4)}{59.4}$$
She got an answer of 19.5, correct to 3 significant figures - OCR - GCSE Maths - Question 21 - 2018 - Paper 1
Step 1
Correct 326.8 to 1 significant figure
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Answer
The number 326.8 rounded to 1 significant figure is 300.
Step 2
Correct 6.94 to 1 significant figure
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Answer
The number 6.94 rounded to 1 significant figure is 7.
Step 3
Correct 3.4 to 1 significant figure
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Answer
The number 3.4 rounded to 1 significant figure is 3.
Step 4
Correct 59.4 to 1 significant figure
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Answer
The number 59.4 rounded to 1 significant figure is 60.
Step 5
Evaluate Asha's expression with rounded values
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Answer
Substituting the rounded values into the expression gives:
