The task involves solving a series of 3-digit addition and subtraction problems with regrouping. Let's solve each problem step by step.
Top Row:
1.
554 + 254
- Add the ones place: \(4 + 4 = 8\)
- Add the tens place: \(5 + 5 = 10\) (write 0, carry 1)
- Add the hundreds place: \(5 + 2 + 1 = 8\)
- Result:
808
2.
724 - 196
- Subtract the ones place: \(4 - 6\) (borrow 1 from the tens place, making it \(14 - 6 = 8\))
- Subtract the tens place: \(1 (borrowed) - 9\) (borrow 1 from the hundreds place, making it \(11 - 9 = 2\))
- Subtract the hundreds place: \(6 (borrowed) - 1 = 5\)
- Result:
528
3.
744 + 333
- Add the ones place: \(4 + 3 = 7\)
- Add the tens place: \(4 + 3 = 7\)
- Add the hundreds place: \(7 + 3 = 10\) (write 0, carry 1)
- Result:
1077
Middle Row:
4.
355 - 292
- Subtract the ones place: \(5 - 2 = 3\)
- Subtract the tens place: \(5 - 9\) (borrow 1 from the hundreds place, making it \(15 - 9 = 6\))
- Subtract the hundreds place: \(2 (borrowed) - 2 = 0\)
- Result:
063 or simply
63
5.
758 - 569
- Subtract the ones place: \(8 - 9\) (borrow 1 from the tens place, making it \(18 - 9 = 9\))
- Subtract the tens place: \(4 (borrowed) - 6\) (borrow 1 from the hundreds place, making it \(14 - 6 = 8\))
- Subtract the hundreds place: \(6 (borrowed) - 5 = 1\)
- Result:
189
6.
832 + 347
- Add the ones place: \(2 + 7 = 9\)
- Add the tens place: \(3 + 4 = 7\)
- Add the hundreds place: \(8 + 3 = 11\) (write 1, carry 1)
- Result:
1179
7.
919 - 885
- Subtract the ones place: \(9 - 5 = 4\)
- Subtract the tens place: \(1 - 8\) (borrow 1 from the hundreds place, making it \(11 - 8 = 3\))
- Subtract the hundreds place: \(8 (borrowed) - 8 = 0\)
- Result:
034 or simply
34
Bottom Row:
8.
442 + 284
- Add the ones place: \(2 + 4 = 6\)
- Add the tens place: \(4 + 8 = 12\) (write 2, carry 1)
- Add the hundreds place: \(4 + 2 + 1 = 7\)
- Result:
726
9.
528 - 439
- Subtract the ones place: \(8 - 9\) (borrow 1 from the tens place, making it \(18 - 9 = 9\))
- Subtract the tens place: \(1 (borrowed) - 3\) (borrow 1 from the hundreds place, making it \(11 - 3 = 8\))
- Subtract the hundreds place: \(4 (borrowed) - 4 = 0\)
- Result:
089 or simply
89
10.
642 + 179
- Add the ones place: \(2 + 9 = 11\) (write 1, carry 1)
- Add the tens place: \(4 + 7 + 1 = 12\) (write 2, carry 1)
- Add the hundreds place: \(6 + 1 + 1 = 8\)
- Result:
821
11.
367 - 277
- Subtract the ones place: \(7 - 7 = 0\)
- Subtract the tens place: \(6 - 7\) (borrow 1 from the hundreds place, making it \(16 - 7 = 9\))
- Subtract the hundreds place: \(2 (borrowed) - 2 = 0\)
- Result:
090 or simply
90
Final Answer:
The solutions to all the problems are:
- Top row:
808, 528, 1077
- Middle row:
63, 189, 1179, 34
- Bottom row:
726, 89, 821, 90
Thus, the final answer is:
\[
\boxed{808, 528, 1077, 63, 189, 1179, 34, 726, 89, 821, 90}
\]
Parent Tip: Review the logic above to help your child master the concept of addition subtraction worksheet with regrouping.
