Grade 4 Addition Worksheet 2: Adding numbers in columns with 20 practice problems.

Problem Description:

The task is to solve the addition problems presented in the worksheet. Each problem involves adding two numbers, and the solutions need to be calculated step by step.

Solution Approach:

We will solve each addition problem systematically, ensuring that we carry over any values when necessary. Let's go through each problem one by one.

---

#### Problem 1:
$$
28 + 72
$$
- Add the units place: \(8 + 2 = 10\). Write down 0 and carry over 1.
- Add the tens place: \(2 + 7 + 1 = 10\). Write down 0 and carry over 1.
- The final result is \(100\).

$$
\boxed{100}
$$

#### Problem 2:
$$
85 + 64
$$
- Add the units place: \(5 + 4 = 9\).
- Add the tens place: \(8 + 6 = 14\).
- The final result is \(149\).

$$
\boxed{149}
$$

#### Problem 3:
$$
59 + 27
$$
- Add the units place: \(9 + 7 = 16\). Write down 6 and carry over 1.
- Add the tens place: \(5 + 2 + 1 = 8\).
- The final result is \(86\).

$$
\boxed{86}
$$

#### Problem 4:
$$
76 + 19
$$
- Add the units place: \(6 + 9 = 15\). Write down 5 and carry over 1.
- Add the tens place: \(7 + 1 + 1 = 9\).
- The final result is \(95\).

$$
\boxed{95}
$$

#### Problem 5:
$$
55 + 63
$$
- Add the units place: \(5 + 3 = 8\).
- Add the tens place: \(5 + 6 = 11\).
- The final result is \(118\).

$$
\boxed{118}
$$

#### Problem 6:
$$
86 + 37
$$
- Add the units place: \(6 + 7 = 13\). Write down 3 and carry over 1.
- Add the tens place: \(8 + 3 + 1 = 12\).
- The final result is \(123\).

$$
\boxed{123}
$$

#### Problem 7:
$$
34 + 48
$$
- Add the units place: \(4 + 8 = 12\). Write down 2 and carry over 1.
- Add the tens place: \(3 + 4 + 1 = 8\).
- The final result is \(82\).

$$
\boxed{82}
$$

#### Problem 8:
$$
53 + 37
$$
- Add the units place: \(3 + 7 = 10\). Write down 0 and carry over 1.
- Add the tens place: \(5 + 3 + 1 = 9\).
- The final result is \(90\).

$$
\boxed{90}
$$

#### Problem 9:
$$
472 + 95
$$
- Add the units place: \(2 + 5 = 7\).
- Add the tens place: \(7 + 9 = 16\). Write down 6 and carry over 1.
- Add the hundreds place: \(4 + 0 + 1 = 5\).
- The final result is \(567\).

$$
\boxed{567}
$$

#### Problem 10:
$$
874 + 86
$$
- Add the units place: \(4 + 6 = 10\). Write down 0 and carry over 1.
- Add the tens place: \(7 + 8 + 1 = 16\). Write down 6 and carry over 1.
- Add the hundreds place: \(8 + 0 + 1 = 9\).
- The final result is \(960\).

$$
\boxed{960}
$$

#### Problem 11:
$$
816 + 27
$$
- Add the units place: \(6 + 7 = 13\). Write down 3 and carry over 1.
- Add the tens place: \(1 + 2 + 1 = 4\).
- Add the hundreds place: \(8 + 0 = 8\).
- The final result is \(843\).

$$
\boxed{843}
$$

#### Problem 12:
$$
954 + 88
$$
- Add the units place: \(4 + 8 = 12\). Write down 2 and carry over 1.
- Add the tens place: \(5 + 8 + 1 = 14\). Write down 4 and carry over 1.
- Add the hundreds place: \(9 + 0 + 1 = 10\).
- The final result is \(1042\).

$$
\boxed{1042}
$$

#### Problem 13:
$$
419 + 53
$$
- Add the units place: \(9 + 3 = 12\). Write down 2 and carry over 1.
- Add the tens place: \(1 + 5 + 1 = 7\).
- Add the hundreds place: \(4 + 0 = 4\).
- The final result is \(472\).

$$
\boxed{472}
$$

#### Problem 14:
$$
387 + 77
$$
- Add the units place: \(7 + 7 = 14\). Write down 4 and carry over 1.
- Add the tens place: \(8 + 7 + 1 = 16\). Write down 6 and carry over 1.
- Add the hundreds place: \(3 + 0 + 1 = 4\).
- The final result is \(464\).

$$
\boxed{464}
$$

#### Problem 15:
$$
749 + 68
$$
- Add the units place: \(9 + 8 = 17\). Write down 7 and carry over 1.
- Add the tens place: \(4 + 6 + 1 = 11\). Write down 1 and carry over 1.
- Add the hundreds place: \(7 + 0 + 1 = 8\).
- The final result is \(817\).

$$
\boxed{817}
$$

#### Problem 16:
$$
631 + 58
$$
- Add the units place: \(1 + 8 = 9\).
- Add the tens place: \(3 + 5 = 8\).
- Add the hundreds place: \(6 + 0 = 6\).
- The final result is \(689\).

$$
\boxed{689}
$$

#### Problem 17:
$$
342 + 246
$$
- Add the units place: \(2 + 6 = 8\).
- Add the tens place: \(4 + 4 = 8\).
- Add the hundreds place: \(3 + 2 = 5\).
- The final result is \(588\).

$$
\boxed{588}
$$

#### Problem 18:
$$
659 + 912
$$
- Add the units place: \(9 + 2 = 11\). Write down 1 and carry over 1.
- Add the tens place: \(5 + 1 + 1 = 7\).
- Add the hundreds place: \(6 + 9 = 15\).
- The final result is \(1571\).

$$
\boxed{1571}
$$

#### Problem 19:
$$
745 + 619
$$
- Add the units place: \(5 + 9 = 14\). Write down 4 and carry over 1.
- Add the tens place: \(4 + 1 + 1 = 6\).
- Add the hundreds place: \(7 + 6 = 13\).
- The final result is \(1364\).

$$
\boxed{1364}
$$

#### Problem 20:
$$
272 + 961
$$
- Add the units place: \(2 + 1 = 3\).
- Add the tens place: \(7 + 6 = 13\). Write down 3 and carry over 1.
- Add the hundreds place: \(2 + 9 + 1 = 12\).
- The final result is \(1233\).

$$
\boxed{1233}
$$

---

Final Answers:

$$
\boxed{
\begin{array}{cccc}
1. & 100 & 2. & 149 \\
3. & 86 & 4. & 95 \\
5. & 118 & 6. & 123 \\
7. & 82 & 8. & 90 \\
9. & 567 & 10. & 960 \\
11. & 843 & 12. & 1042 \\
13. & 472 & 14. & 464 \\
15. & 817 & 16. & 689 \\
17. & 588 & 18. & 1571 \\
19. & 1364 & 20. & 1233 \\
\end{array}
}
$$