Second Grade Math Worksheets - Free Printable

Let's solve each problem step by step from the worksheet titled "Finding a Half on a Number Line Sheet 1".

---

Instructions Recap:

- The number lines are grouped in halves.
- We need to find the missing half numbers (i.e., halfway between two given numbers).
- Then, score based on how many you get correct.

We’ll go through each question one by one.

---

1) Fill in the missing half numbers.

Number line:
```
0 1 2 3 4 5 6 7 8
```

This is a standard number line with whole numbers. But we're to fill in the "half" numbers, meaning the midpoints between consecutive whole numbers.

So, the missing half numbers are:
- Between 0 and 1 → 0.5
- Between 1 and 2 → 1.5
- Between 2 and 3 → 2.5
- Between 3 and 4 → 3.5
- Between 4 and 5 → 4.5
- Between 5 and 6 → 5.5
- Between 6 and 7 → 6.5
- Between 7 and 8 → 7.5

✔ So, the missing numbers are:
0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5, 7.5

---

2) Fill in the missing half numbers.

Number line:
```
2 3 4 5 6 7 8 9 10
```

Again, find the halfway points between each pair of consecutive numbers.

- Between 2 and 3 → 2.5
- Between 3 and 4 → 3.5
- Between 4 and 5 → 4.5
- Between 5 and 6 → 5.5
- Between 6 and 7 → 6.5
- Between 7 and 8 → 7.5
- Between 8 and 9 → 8.5
- Between 9 and 10 → 9.5

✔ Missing numbers:
2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5

---

3) Fill in the missing half numbers.

Number line:
```
14 16 18 20 22
```

Wait — this is not consecutive integers. Let’s check the pattern:

From 14 to 16 → difference = 2
16 to 18 → +2
18 to 20 → +2
20 to 22 → +2

So, the numbers are increasing by 2 each time. Therefore, the halfway point between them is at 1 unit apart.

We need to fill in the middle values between these numbers.

So, between:
- 14 and 16 → 15
- 16 and 18 → 17
- 18 and 20 → 19
- 20 and 22 → 21

But the instruction says “fill in the missing half numbers.” Since the gap is 2, the halfway number is the average of the two endpoints.

For example:
- (14 + 16)/2 = 15
- (16 + 18)/2 = 17
- etc.

✔ So, the missing half numbers are:
15, 17, 19, 21

---

4) Fill in the missing half numbers.

Number line:
```
50 60 70 80 90 100
```

Each jump is +10. So, the halfway point between each pair is 5 units more than the starting number.

- Between 50 and 60 → 55
- Between 60 and 70 → 65
- Between 70 and 80 → 75
- Between 80 and 90 → 85
- Between 90 and 100 → 95

✔ Missing half numbers:
55, 65, 75, 85, 95

---

5) Fill in the missing half numbers.

Number line:
```
10 20 30 40 50 60
```

Each jump is +10 → so halfway is +5.

- Between 10 and 20 → 15
- Between 20 and 30 → 25
- Between 30 and 40 → 35
- Between 40 and 50 → 45
- Between 50 and 60 → 55

✔ Missing half numbers:
15, 25, 35, 45, 55

---

6) Fill in the missing half numbers.

Number line:
```
90 100 110 120 130 140
```

Each jump is +10 → halfway is +5.

- Between 90 and 100 → 95
- Between 100 and 110 → 105
- Between 110 and 120 → 115
- Between 120 and 130 → 125
- Between 130 and 140 → 135

✔ Missing half numbers:
95, 105, 115, 125, 135

---

✔ Final Answers:

1) 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5, 7.5
2) 2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5
3) 15, 17, 19, 21
4) 55, 65, 75, 85, 95
5) 15, 25, 35, 45, 55
6) 95, 105, 115, 125, 135

---

🔍 Explanation:

The key concept here is understanding that:
- A half number means the midpoint between two numbers.
- To find the midpoint:
$$
\text{Midpoint} = \frac{\text{First number} + \text{Second number}}{2}
$$

For example:
- Between 14 and 16: $ \frac{14+16}{2} = 15 $
- Between 50 and 60: $ \frac{50+60}{2} = 55 $

Even when the gaps are larger (like 10 or 2), the idea remains the same: the halfway point is the average.

---

🎯 Scoring:

There are 6 questions, and each has multiple blanks.

Let’s count total missing numbers:
1. 8 numbers
2. 8 numbers
3. 4 numbers
4. 5 numbers
5. 5 numbers
6. 5 numbers
→ Total: 37 blanks

If you filled all correctly, score = 37/37

---

✔ All problems solved! Let me know if you want this formatted as a printable answer sheet.