Addition and Subtraction Worksheet activity - Free Printable

Problem Description:

The task involves solving a series of addition and subtraction problems presented in a grid format. Each cell contains two numbers and an operation (+ or -) between them. The goal is to compute the result of each operation.

Solution Approach:

1. Identify the Operation: For each pair of numbers, determine whether the operation is addition (+) or subtraction (-).
2. Perform the Calculation:
- For addition, sum the two numbers.
- For subtraction, subtract the second number from the first.
3. Record the Result: Write down the result for each operation.

Step-by-Step Solution:

#### Row 1:
1. \( 804 - 188 = 616 \)
2. \( 851 - 195 = 656 \)
3. \( 939 + 336 = 1275 \)
4. \( 740 + 797 = 1537 \)
5. \( 242 + 119 = 361 \)
6. \( 973 + 186 = 1159 \)
7. \( 165 - 104 = 61 \)

#### Row 2:
1. \( 419 - 385 = 34 \)
2. \( 910 + 639 = 1549 \)
3. \( 182 + 509 = 691 \)
4. \( 629 - 220 = 409 \)
5. \( 747 + 434 = 1181 \)
6. \( 507 - 504 = 3 \)
7. \( 468 - 164 = 304 \)

#### Row 3:
1. \( 380 + 369 = 749 \)
2. \( 676 + 380 = 1056 \)
3. \( 470 - 366 = 104 \)
4. \( 439 + 747 = 1186 \)
5. \( 551 - 368 = 183 \)
6. \( 100 + 502 = 602 \)
7. \( 619 - 579 = 40 \)

#### Row 4:
1. \( 774 + 234 = 1008 \)
2. \( 998 - 805 = 193 \)
3. \( 720 + 726 = 1446 \)
4. \( 911 + 288 = 1199 \)
5. \( 201 - 127 = 74 \)
6. \( 379 + 802 = 1181 \)
7. \( 640 + 353 = 993 \)

#### Row 5:
1. \( 552 + 172 = 724 \)
2. \( 519 + 258 = 777 \)
3. \( 922 - 839 = 83 \)
4. \( 473 + 647 = 1120 \)
5. \( 380 - 280 = 100 \)
6. \( 221 - 127 = 94 \)
7. \( 535 + 491 = 1026 \)

#### Row 6:
1. \( 541 + 306 = 847 \)
2. \( 776 - 292 = 484 \)
3. \( 154 + 468 = 622 \)
4. \( 295 - 106 = 189 \)
5. \( 931 - 230 = 701 \)
6. \( 549 + 563 = 1112 \)
7. \( 544 + 382 = 926 \)

#### Row 7:
1. \( 401 + 553 = 954 \)
2. \( 161 + 627 = 788 \)
3. \( 229 - 199 = 30 \)
4. \( 644 + 728 = 1372 \)
5. \( 221 - 123 = 98 \)
6. \( 446 + 550 = 996 \)
7. \( 871 - 147 = 724 \)

Final Results:

\[
\begin{array}{ccccccc}
616 & 656 & 1275 & 1537 & 361 & 1159 & 61 \\
34 & 1549 & 691 & 409 & 1181 & 3 & 304 \\
749 & 1056 & 104 & 1186 & 183 & 602 & 40 \\
1008 & 193 & 1446 & 1199 & 74 & 1181 & 993 \\
724 & 777 & 83 & 1120 & 100 & 94 & 1026 \\
847 & 484 & 622 & 189 & 701 & 1112 & 926 \\
954 & 788 & 30 & 1372 & 98 & 996 & 724 \\
\end{array}
\]

Final Answer:

\[
\boxed{
\begin{array}{ccccccc}
616 & 656 & 1275 & 1537 & 361 & 1159 & 61 \\
34 & 1549 & 691 & 409 & 1181 & 3 & 304 \\
749 & 1056 & 104 & 1186 & 183 & 602 & 40 \\
1008 & 193 & 1446 & 1199 & 74 & 1181 & 993 \\
724 & 777 & 83 & 1120 & 100 & 94 & 1026 \\
847 & 484 & 622 & 189 & 701 & 1112 & 926 \\
954 & 788 & 30 & 1372 & 98 & 996 & 724 \\
\end{array}
}
\]