Addition and Subtraction activity for Grade 4 - Free Printable

Let’s solve each problem step by step. We’ll do the addition problems first, then the subtraction ones.

---

First Addition Problem:

```
2 7 2 3 4
+ 9 5 2 0 1
-----------
```

Start from the rightmost digit (ones place):

- 4 + 1 = 5
- 3 + 0 = 3
- 2 + 2 = 4
- 7 + 5 = 12 → write down 2, carry over 1
- 2 + 9 = 11, plus carried 1 = 12 → write down 12

So we get: 122435

Wait — let’s line it up properly:

Actually, aligning digits:

```
2 7 2 3 4
+ 9 5 2 0 1
-------------
```

Ones: 4 + 1 = 5
Tens: 3 + 0 = 3
Hundreds: 2 + 2 = 4
Thousands: 7 + 5 = 12 → write 2, carry 1
Ten-thousands: 2 + 9 = 11, plus 1 = 12 → write 12

So result is: 122435

But wait — that’s 6 digits? Let’s check:

27234 + 95201 = ?

Calculate numerically:

27234 + 95201 = 122435 ✔

---

Second Addition Problem:

```
5 2 8 5 9 3
+ 9 6 1 7 7
--------------
```

Align by right:

```
5 2 8 5 9 3
+ 0 9 6 1 7 7 ← add leading zero to make same length
----------------
```

Now add column by column from right:

Ones: 3 + 7 = 10 → write 0, carry 1
Tens: 9 + 7 = 16 + 1 = 17 → write 7, carry 1
Hundreds: 5 + 1 = 6 + 1 = 7
Thousands: 8 + 6 = 14 → write 4, carry 1
Ten-thousands: 2 + 9 = 11 + 1 = 12 → write 2, carry 1
Hundred-thousands: 5 + 0 = 5 + 1 = 6

Result: 624770

Check: 528593 + 96177 = 624770 ✔

---

Third Addition Problem:

```
5 8 1 3 5 4
+ 1 5 8 4 1 4
--------------
```

Add column by column:

Ones: 4 + 4 = 8
Tens: 5 + 1 = 6
Hundreds: 3 + 4 = 7
Thousands: 1 + 8 = 9
Ten-thousands: 8 + 5 = 13 → write 3, carry 1
Hundred-thousands: 5 + 1 = 6 + 1 = 7

Result: 739768

Check: 581354 + 158414 = 739768 ✔

---

Fourth Addition Problem:

```
2 7 3 1 1 9
+ 2 0 5 4 1 1
--------------
```

Ones: 9 + 1 = 10 → write 0, carry 1
Tens: 1 + 1 = 2 + 1 = 3
Hundreds: 1 + 4 = 5
Thousands: 3 + 5 = 8
Ten-thousands: 7 + 0 = 7
Hundred-thousands: 2 + 2 = 4

Result: 478530

Check: 273119 + 205411 = 478530 ✔

---

Now subtraction problems.

---

First Subtraction Problem:

```
7 4 7 6 5
- 2 6 5 9 1
-----------
```

Start from right:

Ones: 5 - 1 = 4
Tens: 6 - 9 → can’t do, borrow from hundreds
→ Hundreds digit is 7, becomes 6; tens become 16
16 - 9 = 7
Hundreds: now 6 - 5 = 1
Thousands: 4 - 6 → can’t do, borrow from ten-thousands
→ Ten-thousands 7 becomes 6; thousands become 14
14 - 6 = 8
Ten-thousands: 6 - 2 = 4

Result: 48174

Check: 74765 - 26591 = 48174 ✔

---

Second Subtraction Problem:

```
7 1 2 2 4
- 2 4 4 4 3
-----------
```

Ones: 4 - 3 = 1
Tens: 2 - 4 → borrow from hundreds
Hundreds is 2 → becomes 1; tens become 12
12 - 4 = 8
Hundreds: now 1 - 4 → borrow from thousands
Thousands is 1 → becomes 0; hundreds become 11
11 - 4 = 7
Thousands: now 0 - 4 → borrow from ten-thousands
Ten-thousands 7 → becomes 6; thousands become 10
10 - 4 = 6
Ten-thousands: 6 - 2 = 4

Result: 46781

Check: 71224 - 24443 = 46781 ✔

---

Third Subtraction Problem:

```
8 2 2 4 5 0
- 8 0 1 2 4
--------------
```

Align:

```
8 2 2 4 5 0
- 0 8 0 1 2 4 ← pad with leading zero
----------------
```

Ones: 0 - 4 → borrow
Tens: 5 becomes 4; ones become 10 → 10 - 4 = 6
Tens: 4 - 2 = 2
Hundreds: 4 - 1 = 3
Thousands: 2 - 0 = 2
Ten-thousands: 2 - 8 → borrow from hundred-thousands
Hundred-thousands 8 → becomes 7; ten-thousands become 12
12 - 8 = 4
Hundred-thousands: 7 - 0 = 7

Result: 742326

Check: 822450 - 80124 = 742326 ✔

---

Fourth Subtraction Problem:

```
8 9 9 3 0 0
- 1 7 9 5 4
--------------
```

Align:

```
8 9 9 3 0 0
- 0 1 7 9 5 4
----------------
```

Ones: 0 - 4 → borrow
Tens: 0 becomes 9 (after borrowing), but wait — need to chain borrow.

Actually:

Ones: 0 - 4 → borrow from tens → tens is 0, so go to hundreds.

Hundreds is 3 → becomes 2; tens become 10, then lend to ones → tens become 9, ones become 10
10 - 4 = 6
Tens: 9 - 5 = 4
Hundreds: 2 - 9 → can’t, borrow from thousands
Thousands is 9 → becomes 8; hundreds become 12
12 - 9 = 3
Thousands: 8 - 7 = 1
Ten-thousands: 9 - 1 = 8
Hundred-thousands: 8 - 0 = 8

Result: 881346

Check: 899300 - 17954 = 881346 ✔

---

Final Answer:

Sums:
1. 27234 + 95201 = 122435
2. 528593 + 96177 = 624770
3. 581354 + 158414 = 739768
4. 273119 + 205411 = 478530

Differences:
1. 74765 - 26591 = 48174
2. 71224 - 24443 = 46781
3. 822450 - 80124 = 742326
4. 899300 - 17954 = 881346