Math worksheet for practicing addition of decimals, featuring 15 problems with numbers up to four decimal places.

Let’s solve each problem step by step. We’re adding decimals, so we line up the decimal points and add column by column from right to left — just like regular addition, but keeping track of the decimal place.

---

1) 2.261 + 7.548

Align:

```
2.261
+ 7.548
-------
```

Add thousandths: 1 + 8 = 9
Hundredths: 6 + 4 = 10 → write 0, carry 1
Tenths: 2 + 5 + 1 (carry) = 8
Ones: 2 + 7 = 9

→ 9.809

---

2) 9.626 + 5.721

```
9.626
+ 5.721
-------
```

Thousandths: 6 + 1 = 7
Hundredths: 2 + 2 = 4
Tenths: 6 + 7 = 13 → write 3, carry 1
Ones: 9 + 5 + 1 = 15

→ 15.347

---

3) 7.493 + 4.604

```
7.493
+ 4.604
-------
```

Thousandths: 3 + 4 = 7
Hundredths: 9 + 0 = 9
Tenths: 4 + 6 = 10 → write 0, carry 1
Ones: 7 + 4 + 1 = 12

→ 12.097

---

4) 1.352 + 8.871

```
1.352
+ 8.871
-------
```

Thousandths: 2 + 1 = 3
Hundredths: 5 + 7 = 12 → write 2, carry 1
Tenths: 3 + 8 + 1 = 12 → write 2, carry 1
Ones: 1 + 8 + 1 = 10

→ 10.223

---

5) 3.596 + 6.408

```
3.596
+ 6.408
-------
```

Thousandths: 6 + 8 = 14 → write 4, carry 1
Hundredths: 9 + 0 + 1 = 10 → write 0, carry 1
Tenths: 5 + 4 + 1 = 10 → write 0, carry 1
Ones: 3 + 6 + 1 = 10

→ 10.004

---

6) 5.793 + 9.149

```
5.793
+ 9.149
-------
```

Thousandths: 3 + 9 = 12 → write 2, carry 1
Hundredths: 9 + 4 + 1 = 14 → write 4, carry 1
Tenths: 7 + 1 + 1 = 9
Ones: 5 + 9 = 14

→ 14.942

---

7) 4.858 + 2.227

```
4.858
+ 2.227
-------
```

Thousandths: 8 + 7 = 15 → write 5, carry 1
Hundredths: 5 + 2 + 1 = 8
Tenths: 8 + 2 = 10 → write 0, carry 1
Ones: 4 + 2 + 1 = 7

→ 7.085

---

8) 7.456 + 0.723

```
7.456
+ 0.723
-------
```

Thousandths: 6 + 3 = 9
Hundredths: 5 + 2 = 7
Tenths: 4 + 7 = 11 → write 1, carry 1
Ones: 7 + 0 + 1 = 8

→ 8.179

---

9) 6.947 + 1.319

```
6.947
+ 1.319
-------
```

Thousandths: 7 + 9 = 16 → write 6, carry 1
Hundredths: 4 + 1 + 1 = 6
Tenths: 9 + 3 = 12 → write 2, carry 1
Ones: 6 + 1 + 1 = 8

→ 8.266

---

10) 8.113 + 3.668

```
8.113
+ 3.668
-------
```

Thousandths: 3 + 8 = 11 → write 1, carry 1
Hundredths: 1 + 6 + 1 = 8
Tenths: 1 + 6 = 7
Ones: 8 + 3 = 11

→ 11.781

---

11) 5.378 + 7.417

```
5.378
+ 7.417
-------
```

Thousandths: 8 + 7 = 15 → write 5, carry 1
Hundredths: 7 + 1 + 1 = 9
Tenths: 3 + 4 = 7
Ones: 5 + 7 = 12

→ 12.795

---

12) 0.502 + 2.187

```
0.502
+ 2.187
-------
```

Thousandths: 2 + 7 = 9
Hundredths: 0 + 8 = 8
Tenths: 5 + 1 = 6
Ones: 0 + 2 = 2

→ 2.689

---

13) 9.605 + 5.252

```
9.605
+ 5.252
-------
```

Thousandths: 5 + 2 = 7
Hundredths: 0 + 5 = 5
Tenths: 6 + 2 = 8
Ones: 9 + 5 = 14

→ 14.857

---

14) 6.768 + 4.991

```
6.768
+ 4.991
-------
```

Thousandths: 8 + 1 = 9
Hundredths: 6 + 9 = 15 → write 5, carry 1
Tenths: 7 + 9 + 1 = 17 → write 7, carry 1
Ones: 6 + 4 + 1 = 11

→ 11.759

---

15) 3.296 + 1.868

```
3.296
+ 1.868
-------
```

Thousandths: 6 + 8 = 14 → write 4, carry 1
Hundredths: 9 + 6 + 1 = 16 → write 6, carry 1
Tenths: 2 + 8 + 1 = 11 → write 1, carry 1
Ones: 3 + 1 + 1 = 5

→ 5.164

---

Final Answer:
1) 9.809
2) 15.347
3) 12.097
4) 10.223
5) 10.004
6) 14.942
7) 7.085
8) 8.179
9) 8.266
10) 11.781
11) 12.795
12) 2.689
13) 14.857
14) 11.759
15) 5.164