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Explain how the diagram represents \(\frac{13}{5} - \frac{4}{5}\).
Use the diagram to find the value of \(\frac{13}{5}- \frac{4}{5}\).
Use a number line to represent and find the difference \(\frac{9}{4} - \frac{3}{4}\).
Show two different ways to find the difference: \(2 - \frac{3}{4}\)
For each of the expressions, explain whether you think it would be helpful to decompose one or more numbers to find the value of the expression.
This shows the shoe lengths for a dad and his two daughters.
For each question, show your reasoning.
How much longer is the older daughter’s shoes than her sister’s shoes?
Which is longer, the dad’s shoes or the combined lengths of his daughters’ shoes?
A chocolate chip cookie recipe calls for \(2\frac{3}{4}\) cups of flour. You have only a \(\frac{1}{4}\)-cup measure and a \(\frac{3}{4}\)-cup measure that you can use.
The table shows some lengths of different shoe sizes in inches.
| U.S. shoe size | insole length (inches) |
|---|---|
| 1 | \(7\frac{6}{8}\) |
| 1.5 | 8 |
| 2 | \(8\frac{1}{8}\) |
| 2.5 | \(8\frac{2}{8}\) |
| 3 | \(8\frac{4}{8}\) |
| 3.5 | \(8\frac{5}{8}\) |
| 4 | \(8\frac{6}{8}\) |
| 4.5 | 9 |
| 5 | \(9\frac{1}{8}\) |
| 5.5 | \(9\frac{2}{8}\) |
| 6 | \(9\frac{4}{8}\) |
| 6.5 | \(9\frac{5}{8}\) |
| 7 | \(9\frac{6}{8}\) |