Daniel has two pieces of string. String A is 3.4 meters long and String B is 2.75 meters long. Use >, <, or = to compare the two lengths. Which piece of string is longer? Colton ha... Daniel has two pieces of string. String A is 3.4 meters long and String B is 2.75 meters long. Use >, <, or = to compare the two lengths. Which piece of string is longer? Colton has a piece of string 2 4/5 meters long. He tells Daniel that his string is shorter than String B because 4 is less than 75. Explain how to correct Colton’s reasoning. Order the three lengths from longest to shortest.

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Understand the Problem

The question is asking to compare two lengths of string (String A and String B) using inequality signs and to determine which is longer. Additionally, it involves correcting a misunderstanding regarding a third string's length (Colton's string) and ordering the three lengths from longest to shortest.

Answer

The order of lengths from longest to shortest is: String A ($3.4$ m), Colton's string ($2.8$ m), String B ($2.75$ m).
Answer for screen readers

String A is longer than String B: $3.4 > 2.75$.

Colton's string ($2.8$ meters) is longer than String B ($2.75$ meters).

The order from longest to shortest is: String A, Colton's string, String B.

Steps to Solve

  1. Compare the lengths of String A and String B

First, we need to compare the lengths of String A (3.4 meters) and String B (2.75 meters).

Convert them to the same format for easier comparison:

  • String A: $3.4$ meters
  • String B: $2.75$ meters

Since $3.4 > 2.75$, we can express this with the inequality: $$ 3.4 > 2.75 $$

  1. Determine which string is longer

Given the comparison from step 1, we know that String A is longer than String B.

So, we conclude:

  • String A is longer than String B, or: $$ \text{String A} > \text{String B} $$
  1. Convert Colton's string length to a decimal

Colton's string is given as $2\frac{4}{5}$ meters. We need to convert this to a decimal to properly compare it.

Convert the mixed number: $$ 2\frac{4}{5} = 2 + \frac{4}{5} = 2 + 0.8 = 2.8 \text{ meters} $$

  1. Compare Colton's string with String B

Now, we need to compare Colton's string (2.8 meters) with String B (2.75 meters).

Here, we compare: $$ 2.8 > 2.75 $$

Hence, Colton's string is longer than String B.

  1. Order the three strings

List the lengths:

  • String A: $3.4$ meters
  • Colton's string: $2.8$ meters
  • String B: $2.75$ meters

From longest to shortest, we order them as follows: $$ \text{String A} > \text{Colton's string} > \text{String B} $$

String A is longer than String B: $3.4 > 2.75$.

Colton's string ($2.8$ meters) is longer than String B ($2.75$ meters).

The order from longest to shortest is: String A, Colton's string, String B.

More Information

The inquiry involved understanding how to compare decimal and fractional lengths, along with correcting an underlying misunderstanding about the comparison of numbers.

Tips

  • Confusing mixed numbers and decimals when comparing lengths
  • Incorrectly assuming that comparing just the whole number part (2 vs 3) determines the outcome without considering the decimals or fractional parts

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