Question
Use place value to subtract 639 from
737 . How many times do you have
to regroup?
737 . How many times do you have
to regroup?
Ask by Reese Santiago. in the United States
Jan 23,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
You need to regroup 2 times to subtract 639 from 737.
Solution
To subtract 639 from 737 using place value and determine how many times you need to regroup (borrow), follow these steps:
7 3 7
- 6 3 9
-------
-
Units Place (7 - 9):
- Problem: 7 is less than 9.
- Action: Regroup by borrowing 1 ten from the tens place.
- After Borrowing:
- Units place becomes 17 (7 + 10).
- Tens place decreases by 1 (from 3 to 2).
- Calculation: 17 - 9 = 8
- Regroups So Far: 1
-
Tens Place (2 - 3):
- Problem: 2 is less than 3.
- Action: Regroup by borrowing 1 hundred from the hundreds place.
- After Borrowing:
- Tens place becomes 12 (2 + 10).
- Hundreds place decreases by 1 (from 7 to 6).
- Calculation: 12 - 3 = 9
- Regroups So Far: 2
-
Hundreds Place (6 - 6):
- Calculation: 6 - 6 = 0
Final Result:
7 3 7
- 6 3 9
-------
0 9 8
Total Regroups Needed: 2 times
Answered by UpStudy AI and reviewed by a Professional Tutor
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Simplify this solution Mind Expander
To subtract 639 from 737 using place value, start with the ones place. Since 7 is less than 9, you’ll need to regroup from the tens place. This means borrowing 1 from the tens place (which was 3, making it 2), turning your 7 ones into 17 ones. Now, you can subtract 9 from 17, which equals 8.
Moving on to the tens place, now you have 2 tens left. Since 2 is less than 3, you’ll need to regroup from the hundreds place. Borrowing 1 from the hundreds (which becomes 6) turns your 2 tens into 12 tens. Subtracting 3 from 12 gives you 9.
Finally, in the hundreds place, you have 6 and need to subtract 6 (since 639 has 6 hundreds), which is 0. Overall, you regrouped twice: once for the ones and once for the tens!
