Problem Description:
The task involves solving a series of addition problems. Each problem consists of three numbers to be added together. The goal is to compute the sum for each set of numbers and provide the correct answers.
Step-by-Step Solution:
####
First Set of Problems:
1.
Problem 1:
\[
168 + 502 + 521
\]
- Add the first two numbers: \( 168 + 502 = 670 \)
- Add the result to the third number: \( 670 + 521 = 1191 \)
-
Answer: \( 1191 \)
2.
Problem 2:
\[
888 + 415 + 903
\]
- Add the first two numbers: \( 888 + 415 = 1303 \)
- Add the result to the third number: \( 1303 + 903 = 2206 \)
-
Answer: \( 2206 \)
3.
Problem 3:
\[
816 + 637 + 768
\]
- Add the first two numbers: \( 816 + 637 = 1453 \)
- Add the result to the third number: \( 1453 + 768 = 2221 \)
-
Answer: \( 2221 \)
4.
Problem 4:
\[
855 + 734 + 973
\]
- Add the first two numbers: \( 855 + 734 = 1589 \)
- Add the result to the third number: \( 1589 + 973 = 2562 \)
-
Answer: \( 2562 \)
####
Second Set of Problems:
5.
Problem 5:
\[
447 + 984 + 493
\]
- Add the first two numbers: \( 447 + 984 = 1431 \)
- Add the result to the third number: \( 1431 + 493 = 1924 \)
-
Answer: \( 1924 \)
6.
Problem 6:
\[
142 + 441 + 326
\]
- Add the first two numbers: \( 142 + 441 = 583 \)
- Add the result to the third number: \( 583 + 326 = 909 \)
-
Answer: \( 909 \)
7.
Problem 7:
\[
219 + 391 + 500
\]
- Add the first two numbers: \( 219 + 391 = 610 \)
- Add the result to the third number: \( 610 + 500 = 1110 \)
-
Answer: \( 1110 \)
8.
Problem 8:
\[
381 + 169 + 589
\]
- Add the first two numbers: \( 381 + 169 = 550 \)
- Add the result to the third number: \( 550 + 589 = 1139 \)
-
Answer: \( 1139 \)
####
Third Set of Problems:
9.
Problem 9:
\[
259 + 960 + 200
\]
- Add the first two numbers: \( 259 + 960 = 1219 \)
- Add the result to the third number: \( 1219 + 200 = 1419 \)
-
Answer: \( 1419 \)
10.
Problem 10:
\[
698 + 125 + 638
\]
- Add the first two numbers: \( 698 + 125 = 823 \)
- Add the result to the third number: \( 823 + 638 = 1461 \)
-
Answer: \( 1461 \)
11.
Problem 11:
\[
360 + 390 + 369
\]
- Add the first two numbers: \( 360 + 390 = 750 \)
- Add the result to the third number: \( 750 + 369 = 1119 \)
-
Answer: \( 1119 \)
12.
Problem 12:
\[
850 + 741 + 106
\]
- Add the first two numbers: \( 850 + 741 = 1591 \)
- Add the result to the third number: \( 1591 + 106 = 1697 \)
-
Answer: \( 1697 \)
Final Answers:
\[
\boxed{
\begin{array}{cccc}
1191 & 2206 & 2221 & 2562 \\
1924 & 909 & 1110 & 1139 \\
1419 & 1461 & 1119 & 1697 \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of 7th grade printables.
