Sally used her calculator to work out the value of a number $y$ - Edexcel - GCSE Maths - Question 7 - 2019 - Paper 2
Question 7
Sally used her calculator to work out the value of a number $y$.
The answer on her calculator display began
8.3
Complete the error interval for $y$.
Worked Solution & Example Answer:Sally used her calculator to work out the value of a number $y$ - Edexcel - GCSE Maths - Question 7 - 2019 - Paper 2
Step 1
Complete the error interval for $y$.
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Answer
Since the calculator displays began with 8.3, the number y must be at least 8.3 but less than 8.4, since the next digit in the display could affect the rounding.
