Expanded Form, More on Missing Numbers in Subtraction Practice — Grade 4 math

Lesson 16: Expanded Form, More on Missing Numbers in Subtraction — Practice Questions

1. Use an inverse operation to find the value of $k$ in the equation $k - 25 = 45$. The value of $k$ is ___.
2. Which addition sentence correctly verifies the subtraction fact $87 - 26 = 61$?
- A. $87 + 26 = 113$
- B. $61 + 26 = 87$
- C. $87 + 61 = 148$
- D. $61 - 26 = 35$
3. A classroom had a box of pencils. After 15 pencils were used, 28 pencils were left. How many pencils were in the box to begin with? ___
4. Which addition equation can be used to correctly solve for $p$ in the equation $p - 22 = 60$?
- A. $60 + 22 = p$
- B. $p + 22 = 60$
- C. $60 - 22 = p$
- D. $p + 60 = 22$
5. The equation $78 - 28 = 50$ is true. Which sentence describes a correct way to check this answer using an inverse operation?
- A. Add 50 and 28.
- B. Subtract 28 from 50.
- C. Add 78 and 50.
- D. Subtract 50 from 78.
6. What is the expanded form of the number 853? ___
7. Which expression correctly shows the number 409 in expanded form?
- A. $40 + 9$
- B. $400 + 90$
- C. $400 + 9$
- D. $4 + 0 + 9$
8. What number is represented by the expanded form $700 + 20 + 5$? ___
9. Simplify the radical expression $\sqrt{50}$. ___
10. Which of the following is the simplified form of the expression $\sqrt{27y^3}$?
- A. $9y\sqrt{3y}$
- B. $3y\sqrt{3y}$
- C. $3y^2\sqrt{3}$
- D. $3\sqrt{3y^3}$