Add, Subtract, Multiply & Divide Decimals Worksheet Download - Free Printable

Here's the step-by-step solution to each of the 12 decimal problems on the worksheet:

---

1) 8.2 × 9.499

Multiply as if they were whole numbers:
82 × 9499 = 778,918

Now count decimal places:
8.2 has 1 decimal place
9.499 has 3 decimal places → total = 4 decimal places

Place the decimal point:
→ 77.8918

✔ Answer: 77.8918

---

2) 3.268 ÷ 86

Divide 3.268 by 86.

Since 86 > 3.268, result will be less than 1.

Do long division or use calculator:

3.268 ÷ 86 = 0.038

Check: 86 × 0.038 = 3.268 ✔️

✔ Answer: 0.038

---

3) 9.3 × 4.2

Multiply: 93 × 42 = 3906

Decimal places: 9.3 (1) + 4.2 (1) = 2 → move decimal 2 places left

→ 39.06

✔ Answer: 39.06

---

4) 11.4 + 61.3

Align decimals:

```
11.4
+ 61.3
------
72.7
```

✔ Answer: 72.7

---

5) 9.8 × 7.51

Multiply 98 × 751 = 73,598

Decimal places: 9.8 (1) + 7.51 (2) = 3 → move decimal 3 places left

→ 73.598

✔ Answer: 73.598

---

6) 24.09 - 21.46

Align decimals:

```
24.09
- 21.46
-------
2.63
```

✔ Answer: 2.63

---

7) 13.59 + 16.19

Align decimals:

```
13.59
+ 16.19
-------
29.78
```

✔ Answer: 29.78

---

8) 945 ÷ 0.21

To divide by a decimal, multiply numerator and denominator by 100 to eliminate decimal:

945 ÷ 0.21 = (945 × 100) ÷ (0.21 × 100) = 94,500 ÷ 21

Now divide: 94,500 ÷ 21 = 4,500

✔ Answer: 4500

---

9) 1,794 ÷ 0.13

Multiply numerator and denominator by 100:

1,794 ÷ 0.13 = 179,400 ÷ 13

Now divide: 179,400 ÷ 13 = 13,800

✔ Answer: 13800

---

10) 52.07 - 49.56

Align decimals:

```
52.07
- 49.56
-------
2.51
```

✔ Answer: 2.51

---

11) 89.64 - 32.5

Write 32.5 as 32.50 for alignment:

```
89.64
- 32.50
-------
57.14
```

✔ Answer: 57.14

---

12) 76.44 + 30.602

Align decimals (add trailing zero):

```
76.440
+ 30.602
---------
107.042
```

✔ Answer: 107.042

---

✔ Final Answers (to fill in the "Answers" column):

1. 77.8918
2. 0.038
3. 39.06
4. 72.7
5. 73.598
6. 2.63
7. 29.78
8. 4500
9. 13800
10. 2.51
11. 57.14
12. 107.042

Let me know if you’d like to see any of the calculations shown in long-form!