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For digits 12: We are to consider placement of the decimal point following one arithmetical error: g = 3.14 + 1 = 4.14 = 138 with an answer of 0.00128 - Edexcel - GCSE Maths - Question 4 - 2022 - Paper 1

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For-digits-12:--We-are-to-consider-placement-of-the-decimal-point-following-one-arithmetical-error:--g-=-3.14-+-1-=-4.14-=-138-with-an-answer-of-0.00128-Edexcel-GCSE Maths-Question 4-2022-Paper 1.png

For digits 12: We are to consider placement of the decimal point following one arithmetical error: g = 3.14 + 1 = 4.14 = 138 with an answer of 0.00128. For 0.0012... show full transcript

Worked Solution & Example Answer:For digits 12: We are to consider placement of the decimal point following one arithmetical error: g = 3.14 + 1 = 4.14 = 138 with an answer of 0.00128 - Edexcel - GCSE Maths - Question 4 - 2022 - Paper 1

Step 1

Consider placement of the decimal point

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Answer

To accurately determine the placement of the decimal point, we first need to understand the values involved in the calculations leading to the initial number, 3.14 + 1. The correct interpretation must consider potential arithmetical errors. Following the correct placement gives us the final number of 0.00128.

Step 2

Express 0.00128 in scientific notation

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Answer

We need to express 0.00128 in scientific notation. The scientific notation of a number is represented as a product of a number between 1 and 10, and a power of 10. Thus, 0.00128 can be expressed as:

0.00128=12.8imes1030.00128 = 12.8 imes 10^{-3}

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