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Practice addition with this math worksheet featuring six three-digit addition problems.

Math addition worksheet with six problems involving three-digit numbers, designed for practicing addition within 10,000.

Math addition worksheet with six problems involving three-digit numbers, designed for practicing addition within 10,000.

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Show Answer Key & Explanations Step-by-step solution for: Addition within 1000 online exercise

Problem Description:


The task is to solve the addition problems provided in the image. The goal is to find the sum of each pair of numbers and ensure that the total sum of all results equals 10,000.

Step-by-Step Solution:



#### First Row:
1. 332 + 146:
\[
332 + 146 = 478
\]

2. 399 + 455:
\[
399 + 455 = 854
\]

3. 557 + 653:
\[
557 + 653 = 1210
\]

#### Second Row:
4. 456 + 573:
\[
456 + 573 = 1029
\]

5. 957 + 462:
\[
957 + 462 = 1419
\]

6. 971 + 772:
\[
971 + 772 = 1743
\]

#### Third Row:
7. 115 + 316:
\[
115 + 316 = 431
\]

8. 870 + 107:
\[
870 + 107 = 977
\]

9. 425 + 306:
\[
425 + 306 = 731
\]

Summing All Results:


Now, we add up all the individual sums to verify if the total equals 10,000.

\[
478 + 854 + 1210 + 1029 + 1419 + 1743 + 431 + 977 + 731
\]

Let's break this down step by step:

1. First Group (478 + 854 + 1210):
\[
478 + 854 = 1332
\]
\[
1332 + 1210 = 2542
\]

2. Second Group (1029 + 1419 + 1743):
\[
1029 + 1419 = 2448
\]
\[
2448 + 1743 = 4191
\]

3. Third Group (431 + 977 + 731):
\[
431 + 977 = 1408
\]
\[
1408 + 731 = 2139
\]

4. Adding All Groups Together:
\[
2542 + 4191 + 2139
\]

- First, add \(2542 + 4191\):
\[
2542 + 4191 = 6733
\]

- Next, add \(6733 + 2139\):
\[
6733 + 2139 = 8872
\]

It appears there was a miscalculation in the problem setup or the requirement to reach exactly 10,000. Let's recheck the totals:

Final Verification:


Summing all the individual results again:
\[
478 + 854 + 1210 + 1029 + 1419 + 1743 + 431 + 977 + 731 = 8872
\]

Conclusion:


The total sum of all the addition results is 8872, not 10,000. There might be an error in the problem statement or additional instructions not provided.

Final Answer:


\[
\boxed{8872}
\]
Parent Tip: Review the logic above to help your child master the concept of addition worksheet up to 1000.
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