Decimals Worksheets - Free Printable

Let’s solve each problem step by step. We’ll add or subtract decimals carefully, lining up the decimal points and working column by column.

---

1. 900.54 + 90.32

Line up decimals:

```
900.54
+ 90.32
--------
990.86
```

✔ Answer: 990.86

---

2. 161.4 + 5.887

Add zeros to make same decimal places:

```
161.400
+ 5.887
---------
167.287
```

✔ Answer: 167.287

---

3. 94.9 - 41.875

Write as:

```
94.900
- 41.875
--------
53.025
```

✔ Answer: 53.025

---

4. 609.144 - 15.96

Write as:

```
609.144
- 15.960
---------
593.184
```

✔ Answer: 593.184

---

5. 865.300 - 135.90

(Already aligned)

```
865.300
- 135.900
---------
729.400 → 729.4
```

✔ Answer: 729.4

---

6. 70.5 - 24.9

```
70.5
- 24.9
------
45.6
```

✔ Answer: 45.6

---

7. 489.08 - 4.2

Write as:

```
489.08
- 4.20
--------
484.88
```

✔ Answer: 484.88

---

8. 921.74 ÷ 2.7 ← Wait! This is division? But title says “Adding/Subtracting Decimals”. Let me check again.

Looking back at original image — yes, it says “Calculate each sum or difference.” So this must be a typo in my reading? Actually, looking again — no, in the image it's written as:

> 921.74 ÷ 2.7 =

But that contradicts the worksheet title. However, since the user uploaded the image and we’re to solve what’s there — let’s assume it’s meant to be subtraction? Or maybe it’s really division?

Wait — double-checking the original problem list from your message:

You wrote:

> 921.74 ÷ 2.7 =

But the worksheet title is “Adding/Subtracting Decimals (A)” — so likely a formatting error in transcription. In many such worksheets, sometimes symbols get misread.

Actually, looking at the pattern — all others are + or –. Probably this was meant to be minus, not divide.

Let me verify with context: If it were division, answer would be ~341.385… which doesn’t fit the style of other answers (which are clean decimal additions/subtractions). Also, in handwritten sheets, “–” can look like “÷” if smudged.

Given the context of the worksheet, I believe this is meant to be:

921.74 - 2.7

So:

```
921.74
- 2.70
--------
919.04
```

✔ Answer: 919.04

*(If it truly was division, please clarify — but based on worksheet theme, subtraction makes sense.)*

---

9. 384.94 + 17.349

Align decimals:

```
384.940
+ 17.349
---------
402.289
```

✔ Answer: 402.289

---

10. 30.605 - 40.9

This will be negative.

Write as:

```
30.605
- 40.900
---------
-10.295
```

✔ Answer: -10.295

---

11. 67.4 - 1.19

```
67.40
- 1.19
-------
66.21
```

✔ Answer: 66.21

---

12. 35.439 - 17.2

Write as:

```
35.439
- 17.200
--------
18.239
```

✔ Answer: 18.239

---

13. 406.4 - 100.04

```
406.40
- 100.04
--------
306.36
```

✔ Answer: 306.36

---

14. 6.190 + 5.8

Write as:

```
6.190
+ 5.800
--------
11.990 → 11.99
```

✔ Answer: 11.99

---

15. 75.715 + 30.3

```
75.715
+ 30.300
--------
106.015
```

✔ Answer: 106.015

---

16. 80.88 - 46.8

```
80.88
- 46.80
-------
34.08
```

✔ Answer: 34.08

---

17. 3.7 + 1.5

```
3.7
+ 1.5
-----
5.2
```

✔ Answer: 5.2

---

18. 64.22 + 23.61

```
64.22
+ 23.61
-------
87.83
```

✔ Answer: 87.83

---

19. 675.75 + 26.64

```
675.75
+ 26.64
--------
702.39
```

✔ Answer: 702.39

---

20. 656.86 + 46.37

```
656.86
+ 46.37
--------
703.23
```

✔ Answer: 703.23

---

Final Answer:
990.86, 167.287, 53.025, 593.184, 729.4, 45.6, 484.88, 919.04, 402.289, -10.295, 66.21, 18.239, 306.36, 11.99, 106.015, 34.08, 5.2, 87.83, 702.39, 703.23