1. **Problem 1:** Write an improper fraction using the shaded portions of the shapes. Since the user did not provide explicit shapes or shaded parts, we cannot write a specific improper fraction here. However, an improper fraction is a fraction where the numerator is greater than or equal to the denominator, such as $\frac{7}{4}$. 2. **Problem 2:** In a bag of 140 marbles, $\frac{2}{7}$ are blue. How many marbles are blue? - Formula: Number of blue marbles = Total marbles $\times$ Fraction blue - Calculation: $$\text{Blue marbles} = 140 \times \frac{2}{7}$$ - Simplify: $$140 \times \frac{2}{7} = 140 \times \frac{2}{7} = 20 \times 2 = 40$$ - So, there are 40 blue marbles. 3. **Problem 3:** There are 5 circles with shaded portions: 1, 1, 1, 1, and $\frac{1}{2}$ shaded respectively. - Total shaded portions as an improper fraction: $$1 + 1 + 1 + 1 + \frac{1}{2} = 4 + \frac{1}{2} = \frac{8}{2} + \frac{1}{2} = \frac{9}{2}$$ - So, the improper fraction representing the total shaded portions is $\frac{9}{2}$. **Final answers:** - Problem 1: Cannot determine without shapes. - Problem 2: 40 blue marbles. - Problem 3: Total shaded portions = $\frac{9}{2}$.