Long Addition (Key Stage 2) - Free Printable

Let's carefully analyze the image and solve the problem step by step.

---

Problem:

We are adding three decimal numbers:

```
1.35
+39.50
+24.99
-------
```

The sum is being calculated, and we're at Step 3, which involves handling the carrying of digits during addition.

---

Step-by-step Addition:

Let’s align the numbers by their decimal points:

```
1.35
+39.50
+24.99
-------
```

We'll add them column by column, starting from the rightmost digit (hundredths place).

---

#### Column 1: Hundredths place (rightmost)
Digits: 5 (from 1.35), 0 (from 39.50), 9 (from 24.99)

Add:
5 + 0 + 9 = 14

- Write down 4 in the hundredths place.
- Carry over 1 to the tenths column.

---

#### Column 2: Tenths place
Digits: 3 (from 1.35), 5 (from 39.50), 9 (from 24.99), plus carry-over 1

Add:
3 + 5 + 9 + 1 = 18

- Write down 8 in the tenths place.
- Carry over 1 to the units column.

---

#### Column 3: Units place
Digits: 1 (from 1.35), 9 (from 39.50), 4 (from 24.99), plus carry-over 1

Add:
1 + 9 + 4 + 1 = 15

- Write down 5 in the units place.
- Carry over 1 to the tens column.

Now, this is where the image comes in.

---

Step 3: "Write the left digit below the column to the left."

In the units column, we have a total of 15.

- The right digit (5) is written in the units place.
- The left digit (1) is carried over to the tens column.

But since there are no other digits in the tens place (only the carry), we write the left digit (1) in the tens column.

So now, the tens column has:
- From 39.50 → 3 (in tens)
- From 24.99 → 2 (in tens)
- Plus the carry-over 1 from the units column

Wait — let’s recheck.

Actually, the numbers are:

- 1.35 → 0 tens
- 39.50 → 3 tens
- 24.99 → 2 tens

So tens column: 0 + 3 + 2 = 5, plus carry-over 1 from the units column → 6

So total sum so far:

```
1.35
+39.50
+24.99
-------
65.84
```

Wait — but the image shows 5.84 with a 1 carried below the units column? That seems inconsistent.

Let’s look again at the image.

---

Analyzing the Image:

Image shows:

```
1.35
+39.50
+24.99
------
5.84
1 1 1
```

And says: "1 has been 'carried'." and "Left digit" pointing to 15.

This suggests that the addition is being done column by column, and at some point, we get 15 in the units column, and we write 5 in the units place and carry 1 to the tens.

But the image shows only 5.84, which is clearly wrong because:

- 1.35 + 39.50 = 40.85
- 40.85 + 24.99 = 65.84

So the correct answer should be 65.84, not 5.84.

But the image shows 5.84 as the result — this appears to be an error or a partial step.

Wait — perhaps the image is showing intermediate steps, not the final sum.

Let’s re-express the full addition:

```
1.35
+39.50
+24.99
-------
??.??
```

Let’s do it properly:

```
1.35
+39.50
+24.99
-------
65.84
```

Breakdown:

- Hundredths: 5 + 0 + 9 = 14 → write 4, carry 1
- Tenths: 3 + 5 + 9 + 1(carry) = 18 → write 8, carry 1
- Units: 1 + 9 + 4 + 1(carry) = 15 → write 5, carry 1
- Tens: 0 + 3 + 2 + 1(carry) = 6 → write 6

So final sum: 65.84

---

Why does the image show 5.84?

Possibly, the image is illustrating only the decimal part or a misalignment.

But looking at the image:

- It shows 5.84 under the numbers.
- Then 1 1 1 below that.
- And a note: "1 has been 'carried'" and "Left digit" pointing to 15.

Ah! This seems like a partial step.

Perhaps the image is showing the addition of just the decimal parts, or it's a visual aid for carrying.

Wait — maybe the 5.84 is the sum of the decimal parts only, and the 1 1 1 are the carries.

But that doesn’t make sense.

Alternatively, perhaps the image is incomplete, or it's showing how to handle the carry from the units column.

Let’s focus on what the instruction says:

> Step 3 (2nd rpt cont'd): Write the left digit below the column to the left.

This means: when you have a two-digit sum (like 15), you write the right digit in the current column, and write the left digit (the carry) below the next column to the left.

So in the units column, sum is 15.

- Write 5 in the units place.
- Write 1 (the left digit) below the tens column, as a carry.

That matches the image.

So the image is showing after adding the units column, you have:

- Sum = 15
- Write 5 in the units place
- Write 1 below the tens column (as carry)

Then later, you add the tens column: 3 (from 39.50) + 2 (from 24.99) + 1 (carry) = 6

So final sum is 65.84

But the image shows 5.84 — this is likely a typo or simplification.

Wait — could it be that the top number is actually 1.35, and the others are large, but the image is showing intermediate carry digits?

Yes — the 1 1 1 below the line are carry digits.

Let’s reconstruct:

```
1.35
+39.50
+24.99
-------
5.84 ← this is incorrect; should be 65.84
1 1 1 ← these are the carry digits
```

But 5.84 can't be right.

Unless...

Wait — perhaps the image is showing only the decimal portion, and the whole number part is being handled separately?

No — that doesn’t make sense.

Another possibility: the image is a screenshot from a tutorial, and the 5.84 is a mistake, or it's showing just the last step.

But the correct total is:

1.35 + 39.50 = 40.85
40.85 + 24.99 = 65.84

So the final answer must be 65.84

---

Conclusion:

The image is illustrating the carry process in addition.

- In the units column, sum is 1 + 9 + 4 + carry = 15
- So write 5 in the units place
- Carry 1 to the tens column
- This 1 is the left digit of 15
- So, per instruction: write the left digit (1) below the column to the left (i.e., below the tens column)

Thus, the solution is:

✔ Correct final sum: 65.84

✔ Carry digits:
- Hundredths: 14 → carry 1
- Tenths: 18 → carry 1
- Units: 15 → carry 1
- Tens: 0 + 3 + 2 + 1 = 6

So the image is demonstrating the carry process, specifically writing the left digit (1) from 15 below the tens column.

Even though the 5.84 shown is incorrect (should be 65.84), the instruction is correct.

---

✔ Final Answer:

The left digit (1) from 15 is carried to the tens column, and written below it. The final sum is 65.84.