Lesson 3: Subtraction Across Zeros and Verification — Practice Questions

1. 1. To perform a subtraction from 8,000, the number must be regrouped. How is 8,000 correctly expressed after regrouping to the ones place?

   • A. 7 thousands + 9 hundreds + 9 tens + 10 ones
   • B. 7 thousands + 10 hundreds + 0 tens + 0 ones
   • C. 8 thousands + 9 hundreds + 9 tens + 10 ones
   • D. 7 thousands + 9 hundreds + 10 tens + 0 ones

2. 2. A mountain is 7,000 meters tall. A climber has reached an altitude of 3,456 meters. How many more meters must the climber ascend to reach the summit? ___ meters (include comma)

3. 3. Calculate the difference: $9,004 - 2,785 = \_\_\_$

4. 4. To solve $4,000 - 1,582$, the number 4,000 must be regrouped. Which option shows the values of the thousands, hundreds, tens, and ones places after regrouping?

   • A. 3, 9, 9, 10
   • B. 3, 10, 0, 0
   • C. 4, 9, 9, 10
   • D. 3, 9, 10, 0

5. 5. A company has a yearly budget of 80,000 dollars. So far, 47,352 dollars have been spent. How much money is remaining in the budget? ___ dollars

6. 6. To solve the problem $5,003 - 768$, how must the number 5,003 be regrouped?

   • A. 4 thousands, 9 hundreds, 9 tens, 13 ones
   • B. 4 thousands, 10 hundreds, 0 tens, 13 ones
   • C. 5 thousands, 9 hundreds, 9 tens, 13 ones
   • D. 4 thousands, 9 hundreds, 10 tens, 3 ones

7. 7. A factory produced 20,000 widgets in a month. If 8,741 of them were sold, how many widgets remain? ___ (include comma)

8. 8. Find the difference: $50,000 - 18,294 = \_\_\_$

9. 9. Calculate the difference: $203,004 - 98,126 = \_\_\_$

10. 10. When preparing to subtract in the problem $7,000 - 1,842$, how is the number $7,000$ regrouped?

    • A. 6 thousands, 10 hundreds, 0 tens, 0 ones
    • B. 6 thousands, 9 hundreds, 10 tens, 0 ones
    • C. 6 thousands, 9 hundreds, 9 tens, 10 ones
    • D. 7 thousands, 9 hundreds, 9 tens, 10 ones