Molly walked 3.45 miles on a hike. her sister walked 1.23 miles. her brother walked 0.85 miles. round each distance to the nearest tenth of a mile. about how much further did molly walk than her brother and sister combined? a) about 1.4 miles b) about 1.2 miles c) about 2.4 miles d) about 2.2 miles

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Your answer would be a) about 1.4 miles

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Step-by-step explanation:

In order to solve this problem, we're going to need to round to the tenths place.

The tenths place is the decimal place to the right of the decimal.

Example: 0.54  --- 5 would be in the tenths place.

We would use the number next to it to see if we're going to round up or stay the same.

3.45 --- 4 is in the tenths place. When we look at the number next to it, 5, we would notice that it's big enough to make 4 round up. You would round 4 up to 5.

Your decimal should look like this: 3.5

1.23 --- 2 is in the tenths place. When you look at the number next to it, 3, it's not big enough for us to round it up, so we would keep the number 2 the same.

Your decimal should look like this: 1.2

0.85 --- 8 is in the tenths place. When you look at the number next to it, 5, you would see that it's big enough for you to round up, so you would round the 8 to a 9.

Your decimal should look like this: 0.9

Our rounded decimals:

3.5

1.2

0.9

Now, we have our rounded decimals. We're going to need to find how much Molly walked more than her sister and brother.

Molly walked 3.5

Her sister walked 1.2

Her brother walked 0.9

To solve that question, we would get 3.5 and subtract it with the rest of the numbers, since we are subtracting Molly's walk length to her brother and sister's combined walked length.

You should get 1.4

Therefore, Molly walked 1.4 miles more than her sister and brother combined.

A). about 1.4 miles should be your FINAL answer.

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step-by-step explanation: