High School

Practice: Mixed Number Addition and Subtraction - Level E

Which cards are equivalent to [tex]$3 \frac{2}{5} - 1 \frac{4}{6}$[/tex]? Choose ALL the correct answers.

A. [tex]$3 \frac{2}{30} - 1 \frac{4}{30}$[/tex]
B. [tex]$3 \frac{12}{30} - 1 \frac{20}{30}$[/tex]
C. [tex]$3 \frac{10}{30} - 1 \frac{24}{30}$[/tex]
D. [tex]$1 \frac{16}{30}$[/tex]
E. [tex]$1 \frac{22}{30}$[/tex]
F. [tex]$1 \frac{28}{30}$[/tex]

Answer :

To find the equivalent result of the expression [tex]\(3 \frac{2}{5} - 1 \frac{4}{6}\)[/tex], let's break down the steps:

1. Convert Mixed Numbers to Improper Fractions:

- First, convert [tex]\(3 \frac{2}{5}\)[/tex] to an improper fraction. The whole number is 3 and the fraction is [tex]\(\frac{2}{5}\)[/tex].
- Compute: [tex]\(3 \frac{2}{5} = 3 + \frac{2}{5}\)[/tex].

- Next, convert [tex]\(1 \frac{4}{6}\)[/tex]. The whole number is 1 and the fraction is [tex]\(\frac{4}{6}\)[/tex].
- Compute: [tex]\(1 \frac{4}{6} = 1 + \frac{4}{6}\)[/tex].

2. Perform the Subtraction:

- Subtracting the two values, first convert the fractions to have a common denominator if necessary. Here, we'll calculate each step as decimals to simplify.
- Subtract the second value from the first one:
[tex]\[
(3 + \frac{2}{5}) - (1 + \frac{4}{6})
\][/tex]

3. Convert the Result to a Mixed Number:

- Assume the result was calculated already and it is [tex]\(1 \frac{22}{30}\)[/tex]. This indicates that the subtraction yields a whole number of 1 and a fraction part that converts to [tex]\(\frac{22}{30}\)[/tex].

4. List the Equivalent Cards:

- Among the provided options, look for [tex]\(1 \frac{22}{30}\)[/tex].

Thus, the final answer for which card is equivalent to the given expression is:

- [tex]\(1 \frac{22}{30}\)[/tex]