Decomposing Numbers as Tens and Ones Worksheets - Free Printable

Problem: Decomposing Numbers as Tens and Ones

The task involves decomposing numbers into their tens and ones components. Let's solve each part step by step.

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#### Part A: Decompose each number, and write how many tens and ones in each.

1. 15 = ______ ten and ______ ones
- The number 15 can be broken down into:
- 1 ten (since 10 is the largest multiple of 10 that fits into 15)
- 5 ones (the remaining part after subtracting 10 from 15)
- Answer: 15 = 1 ten and 5 ones

2. 18 = ______ ten and ______ ones
- The number 18 can be broken down into:
- 1 ten (since 10 is the largest multiple of 10 that fits into 18)
- 8 ones (the remaining part after subtracting 10 from 18)
- Answer: 18 = 1 ten and 8 ones

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#### Part B: Split each number as tens and ones, and write them in the circles.

1. 16
- The number 16 can be broken down into:
- 1 ten
- 6 ones
- Write these values in the circles:
```
16
|
1 6
ten ones
```

2. 13
- The number 13 can be broken down into:
- 1 ten
- 3 ones
- Write these values in the circles:
```
13
|
1 3
ten ones
```

---

#### Part C: Write how many in all, how many tens, and how many ones.

1. Image 1: Counters on Plates
- There are two plates shown:
- The first plate has 10 counters.
- The second plate has 4 counters.
- Total counters: \( 10 + 4 = 14 \)
- Tens: 1 (from the first plate)
- Ones: 4 (from the second plate)
- Fill in the table:
```
| Total | Ten | Ones |
|-------|-----|------|
| 14 | 1 | 4 |
```

2. Image 2: Groups of Balls
- There are two groups shown:
- The first group has 2 groups of 10 balls (totaling 20 balls).
- The second group has 3 individual balls.
- Total balls: \( 20 + 3 = 23 \)
- Tens: 2 (from the groups of 10)
- Ones: 3 (from the individual balls)
- Fill in the table:
```
| Total | Ten | Ones |
|-------|-----|------|
| 23 | 2 | 3 |
```

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Final Answers:

#### Part A:
1. 15 = 1 ten and 5 ones
2. 18 = 1 ten and 8 ones

#### Part B:
1. 16:
```
16
|
1 6
ten ones
```
2. 13:
```
13
|
1 3
ten ones
```

#### Part C:
1. Counters on Plates:
```
| Total | Ten | Ones |
|-------|-----|------|
| 14 | 1 | 4 |
```
2. Groups of Balls:
```
| Total | Ten | Ones |
|-------|-----|------|
| 23 | 2 | 3 |
```

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Final Boxed Answers:
\[
\boxed{
\text{A) 1) 1 ten and 5 ones, 2) 1 ten and 8 ones; B) 1) 1 ten and 6 ones, 2) 1 ten and 3 ones; C) 1) Total: 14, Ten: 1, Ones: 4; 2) Total: 23, Ten: 2, Ones: 3}
}
\]