When subtracting $10\frac{1}{8} - 4\frac{3}{8}$, why is regrouping the first step?

Because the whole number 10 is larger than 4.

Because the fraction $\frac{1}{8}$ is smaller than the fraction $\frac{3}{8}$.

Because the denominators are the same.

Because the answer must be a mixed number.

Subtract Mixed Numbers Practice — Grade 4 math

Lesson 9: Subtract Mixed Numbers — Practice Questions

1. Calculate the difference and write the answer in simplest form: $6\frac{3}{8} - 2\frac{5}{8} = $ ___
2. To solve $7\frac{1}{5} - 3\frac{4}{5}$, you must first regroup $7\frac{1}{5}$. What is the equivalent regrouped mixed number?
- A. $6\frac{6}{5}$
- B. $7\frac{6}{5}$
- C. $6\frac{4}{5}$
- D. $6\frac{1}{5}$
3. A baker has $4\frac{1}{3}$ pounds of sugar. She uses $1\frac{2}{3}$ pounds for a recipe. How many pounds of sugar are left? The answer is ___ pounds.
4. When subtracting $10\frac{1}{8} - 4\frac{3}{8}$, why is regrouping the first step?
- A. Because the whole number 10 is larger than 4.
- B. Because the fraction $\frac{1}{8}$ is smaller than the fraction $\frac{3}{8}$.
- C. Because the denominators are the same.
- D. Because the answer must be a mixed number.
5. Calculate the difference: $9\frac{2}{7} - 3\frac{6}{7} = $ ___
6. What is the result of $12\frac{2}{9} - 5\frac{7}{9}$?
- A. $6\frac{4}{9}$
- B. $7\frac{5}{9}$
- C. $6\frac{5}{9}$
- D. $7\frac{4}{9}$
7. To solve $9\frac{3}{10} - 2\frac{7}{10}$, the number $9\frac{3}{10}$ is rewritten as $8\frac{x}{10}$. What is the value of the numerator $x$? ___
8. Calculate $7\frac{1}{6} - 4\frac{5}{6}$. Write your answer as a mixed number in simplest form. ___
9. A rope is $15\frac{1}{12}$ feet long. If you cut off a piece that is $8\frac{5}{12}$ feet long, how much rope is left? Simplify your answer.
- A. $6\frac{2}{3}$ feet
- B. $7\frac{1}{3}$ feet
- C. $6\frac{8}{12}$ feet
- D. $7\frac{4}{12}$ feet
10. Subtract and write the answer in simplest form: $6\frac{1}{8} - 2\frac{5}{8} = \_\_\_$