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andrea is 165cm tall, correct to the nearest cm. Joel is 170 cm tall, correct to the nearest 10 cm. show that Andrea could be taller than Joel.

User Rodolphe
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1 Answer

5 votes

Answer:

Shown below.

Explanation:

If Andrea was 164.5 - 165.4 centimeters tall, rounding to the nearest centimeter would make her 165cm tall.

If Joel was 165 - 174 centimeters tall, rounding to the nearest 10 centimeters would make it 170 cm.

What does it mean to round?

If we were to round to the nearest whole number, the number we are rounding, for example 3.7, needs to have a number of 5 or above to round up. Because 7 is larger than 5 in our case, 3.7 rounded to the nearest whole number becomes 4.

It's similar for rounding to the nearest 10cm. If we have 14cm, the nearest 10cm would be 10. This is because the last digit (the 4) is less than 5, meaning we round down.

The tallest Andrea could be is 165.4 cm and the shortest Joel could be is 165 cm.

As 165.4 > 165, this shows that Andrea could be taller than Joel.

User Pomyk
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