Decimal addition and subtraction practice worksheet with six problems requiring students to fill in missing digits.

Of course! Let's solve each of the six decimal addition and subtraction problems step by step. The key is to line up the decimal points before performing the operation, just like with whole numbers.

---

QUESTION 1: 12.07 + 5.1

We need to add these two numbers. First, write them vertically with the decimal points aligned. Since 5.1 has only one decimal place, we can think of it as 5.10 to make the columns match.

```
12.07
+ 5.10
-------
```

Now add column by column from right to left:

- Hundredths: 7 + 0 = 7
- Tenths: 0 + 1 = 1
- Ones: 2 + 5 = 7
- Tens: 1 + 0 = 1

✔ Answer: 17.17

Filling the boxes:
Top row (12.07): `1` `2` . `0` `7`
Bottom row (5.1): ` ` `5` . `1` `0` *(Note: The first box is empty since it’s a single-digit number)*
Result: `1` `7` . `1` `7`

---

QUESTION 2: 14 + 0.95

Write 14 as 14.00 to align decimals.

```
14.00
+ 0.95
-------
```

Add column by column:

- Hundredths: 0 + 5 = 5
- Tenths: 0 + 9 = 9
- Ones: 4 + 0 = 4
- Tens: 1 + 0 = 1

✔ Answer: 14.95

Filling the boxes:
Top row (14.00): `1` `4` . `0` `0`
Bottom row (0.95): ` ` `0` . `9` `5`
Result: `1` `4` . `9` `5`

---

QUESTION 3: 1.02 - 0.6

Write 0.6 as 0.60 to align decimals.

```
1.02
- 0.60
-------
```

Subtract column by column (borrow if needed):

- Hundredths: 2 - 0 = 2
- Tenths: 0 - 6 → Can’t do that, so borrow 1 from the ones place.
- Ones digit (1) becomes 0, tenths become 10.
- 10 - 6 = 4
- Ones: 0 - 0 = 0

✔ Answer: 0.42

Filling the boxes:
Top row (1.02): ` ` `1` . `0` `2`
Bottom row (0.60): ` ` `0` . `6` `0`
Result: ` ` `0` . `4` `2`

*(Note: Leading zero in result is optional but fits the box format.)*

---

QUESTION 4: 49.03 - 13.02

Align decimals:

```
49.03
- 13.02
-------
```

Subtract column by column:

- Hundredths: 3 - 2 = 1
- Tenths: 0 - 0 = 0
- Ones: 9 - 3 = 6
- Tens: 4 - 1 = 3

✔ Answer: 36.01

Filling the boxes:
Top row (49.03): `4` `9` . `0` `3`
Bottom row (13.02): `1` `3` . `0` `2`
Result: `3` `6` . `0` `1`

---

QUESTION 5: 29.99 + 1.01

Align decimals:

```
29.99
+ 1.01
-------
```

Add column by column:

- Hundredths: 9 + 1 = 10 → Write 0, carry 1
- Tenths: 9 + 0 + 1 (carry) = 10 → Write 0, carry 1
- Ones: 9 + 1 + 1 (carry) = 11 → Write 1, carry 1
- Tens: 2 + 0 + 1 (carry) = 3

✔ Answer: 31.00

Filling the boxes:
Top row (29.99): `2` `9` . `9` `9`
Bottom row (1.01): ` ` `1` . `0` `1`
Result: `3` `1` . `0` `0`

---

QUESTION 6: 54.44 - 5.37

Align decimals:

```
54.44
- 5.37
-------
```

Subtract column by column (borrowing as needed):

- Hundredths: 4 - 7 → Can’t do, borrow 1 from tenths.
- Tenths (4) becomes 3, hundredths become 14.
- 14 - 7 = 7
- Tenths: 3 - 3 = 0
- Ones: 4 - 5 → Can’t do, borrow 1 from tens.
- Tens (5) becomes 4, ones become 14.
- 14 - 5 = 9
- Tens: 4 - 0 = 4

✔ Answer: 49.07

Filling the boxes:
Top row (54.44): `5` `4` . `4` `4`
Bottom row (5.37): ` ` `5` . `3` `7`
Result: `4` `9` . `0` `7`

---

## ✔ Final Answers Summary:

| Question | Problem | Answer |
|----------|---------------|--------|
| 1 | 12.07 + 5.1 | 17.17 |
| 2 | 14 + 0.95 | 14.95 |
| 3 | 1.02 - 0.6 | 0.42 |
| 4 | 49.03 - 13.02 | 36.01 |
| 5 | 29.99 + 1.01 | 31.00 |
| 6 | 54.44 - 5.37 | 49.07 |

You can now fill in all the boxes on your worksheet using these answers!

Let me know if you’d like to see any step visualized further!