Math worksheet for adding numbers using place value charts and blocks.

Let's solve each addition problem using place value charts (H = Hundreds, T = Tens, O = Ones) and blocks (which represent the digits in each place). We'll go step by step.

---

Problem 1: 42 + 7

We break down the numbers:

- 42 = 4 tens and 2 ones
- 7 = 0 tens and 7 ones

Now add:

- Ones: 2 + 7 = 9
- Tens: 4 + 0 = 4

So, the sum is 49

Place Value Chart:

```
H T O
┌───────┐
1. │ 0 4 2 │
├───────┤
│ 0 0 7 │
├───────┤
│ 0 4 9 │
└───────┘
```

✔ Answer: 49

---

Problem 2: 38 + 25

Break it down:

- 38 = 3 tens, 8 ones
- 25 = 2 tens, 5 ones

Add:

- Ones: 8 + 5 = 13 → write down 3, carry over 1 ten
- Tens: 3 + 2 + 1 (carry) = 6

So, total = 63

Place Value Chart:

```
H T O
┌───────┐
2. │ 0 3 8 │
├───────┤
│ 0 2 5 │
├───────┤
│ 0 6 3 │
└───────┘
```

✔ Answer: 63

---

Problem 3: 64 + 31

- 64 = 6 tens, 4 ones
- 31 = 3 tens, 1 one

Add:

- Ones: 4 + 1 = 5
- Tens: 6 + 3 = 9

Sum = 95

Place Value Chart:

```
H T O
┌───────┐
3. │ 0 6 4 │
├───────┤
│ 0 3 1 │
├───────┤
│ 0 9 5 │
└───────┘
```

✔ Answer: 95

---

Problem 4: 59 + 41

- 59 = 5 tens, 9 ones
- 41 = 4 tens, 1 one

Add:

- Ones: 9 + 1 = 10 → write 0, carry 1 ten
- Tens: 5 + 4 + 1 = 10 → write 0, carry 1 hundred

So, total = 100

Place Value Chart:

```
H T O
┌───────┐
4. │ 0 5 9 │
├───────┤
│ 0 4 1 │
├───────┤
│ 1 0 0 │
└───────┘
```

✔ Answer: 100

---

Problem 5: 76 + 9

- 76 = 7 tens, 6 ones
- 9 = 0 tens, 9 ones

Add:

- Ones: 6 + 9 = 15 → write 5, carry 1 ten
- Tens: 7 + 0 + 1 = 8

Sum = 85

Place Value Chart:

```
H T O
┌───────┐
5. │ 0 7 6 │
├───────┤
│ 0 0 9 │
├───────┤
│ 0 8 5 │
└───────┘
```

✔ Answer: 85

---

Problem 6: 83 + 10

- 83 = 8 tens, 3 ones
- 10 = 1 ten, 0 ones

Add:

- Ones: 3 + 0 = 3
- Tens: 8 + 1 = 9

Sum = 93

Place Value Chart:

```
H T O
┌───────┐
6. │ 0 8 3 │
├───────┤
│ 0 1 0 │
├───────┤
│ 0 9 3 │
└───────┘
```

✔ Answer: 93

---

✔ Final Answers:

1. 49
2. 63
3. 95
4. 100
5. 85
6. 93

You can now fill these answers into the provided chart. Each box under H, T, O should reflect the digits of the result.

Let me know if you'd like a visual representation with blocks!