2nd Grade math worksheet focusing on adding 1, 10, and 100, including number track exercises and addition problems with answers.

Problem Analysis:

The task involves two main sections:
1. Section A: Filling in missing numbers on number tracks by counting by ones, tens, and hundreds.
2. Section B: Solving addition problems involving adding 1, 10, or 100 to given numbers.

Let's solve each section step by step.

---

Section A: Fill in the missing numbers on these number tracks.

#### 1) Count by ones
The sequence starts at 134 and increases by 1 each time.
- Given: 134, 135, __, 137, __, 139, __, 141
- Missing numbers:
- After 135: \( 135 + 1 = 136 \)
- After 137: \( 137 + 1 = 138 \)
- After 139: \( 139 + 1 = 140 \)

Completed sequence: 134, 135, 136, 137, 138, 139, 140, 141

#### 2) Count by tens
The sequence starts at 30 and increases by 10 each time.
- Given: 30, 40, __, 60, __, 70, __, 90, 100
- Missing numbers:
- After 40: \( 40 + 10 = 50 \)
- After 60: \( 60 + 10 = 70 \) (already given)
- After 70: \( 70 + 10 = 80 \)
- After 90: \( 90 + 10 = 100 \) (already given)

Completed sequence: 30, 40, 50, 60, 70, 80, 90, 100

#### 3) Count by hundreds
The sequence starts at 100 and increases by 100 each time.
- Given: 100, 200, __, 400, __, 600, __, 800
- Missing numbers:
- After 200: \( 200 + 100 = 300 \)
- After 400: \( 400 + 100 = 500 \)
- After 600: \( 600 + 100 = 700 \)

Completed sequence: 100, 200, 300, 400, 500, 600, 700, 800

#### 4) Count by ones
The sequence starts at 215 and increases by 1 each time.
- Given: 215, __, 217, 218, __, 221, __, 222
- Missing numbers:
- After 215: \( 215 + 1 = 216 \)
- After 218: \( 218 + 1 = 219 \)
- After 221: \( 221 + 1 = 222 \) (already given)

Completed sequence: 215, 216, 217, 218, 219, 221, 222

#### 5) Count by tens
The sequence starts at 120 and increases by 10 each time.
- Given: 120, 130, __, 150, __, 170, __, 190
- Missing numbers:
- After 130: \( 130 + 10 = 140 \)
- After 150: \( 150 + 10 = 160 \)
- After 170: \( 170 + 10 = 180 \)

Completed sequence: 120, 130, 140, 150, 160, 170, 180, 190

#### 6) Count by hundreds
The sequence starts at 200 and increases by 100 each time.
- Given: 200, 300, __, 500, __, 700, __, 900
- Missing numbers:
- After 300: \( 300 + 100 = 400 \)
- After 500: \( 500 + 100 = 600 \)
- After 700: \( 700 + 100 = 800 \)

Completed sequence: 200, 300, 400, 500, 600, 700, 800, 900

---

Section B: Work out the answers to these addition problems.

#### 1) \( 152 + 1 \)
- Add 1 to 152: \( 152 + 1 = 153 \)

#### 2) \( 283 + 1 \)
- Add 1 to 283: \( 283 + 1 = 284 \)

#### 3) \( 130 + 10 \)
- Add 10 to 130: \( 130 + 10 = 140 \)

#### 4) \( 220 + 10 \)
- Add 10 to 220: \( 220 + 10 = 230 \)

#### 5) \( 310 + 10 \)
- Add 10 to 310: \( 310 + 10 = 320 \)

#### 6) \( 400 + 100 \)
- Add 100 to 400: \( 400 + 100 = 500 \)

#### 7) \( 200 + 100 \)
- Add 100 to 200: \( 200 + 100 = 300 \)

#### 8) \( 657 + 1 \)
- Add 1 to 657: \( 657 + 1 = 658 \)

#### 9) \( 359 + 1 \)
- Add 1 to 359: \( 359 + 1 = 360 \)

#### 10) \( 330 + 10 \)
- Add 10 to 330: \( 330 + 10 = 340 \)

#### 11) \( 570 + 10 \)
- Add 10 to 570: \( 570 + 10 = 580 \)

#### 12) \( 300 + 10 \)
- Add 10 to 300: \( 300 + 10 = 310 \)

#### 13) \( 100 + 100 \)
- Add 100 to 100: \( 100 + 100 = 200 \)

#### 14) \( 500 + 100 \)
- Add 100 to 500: \( 500 + 100 = 600 \)

---

Final Answers:

#### Section A:
1. 134, 135, 136, 137, 138, 139, 140, 141
2. 30, 40, 50, 60, 70, 80, 90, 100
3. 100, 200, 300, 400, 500, 600, 700, 800
4. 215, 216, 217, 218, 219, 221, 222
5. 120, 130, 140, 150, 160, 170, 180, 190
6. 200, 300, 400, 500, 600, 700, 800, 900

#### Section B:
1. \( 152 + 1 = \boxed{153} \)
2. \( 283 + 1 = \boxed{284} \)
3. \( 130 + 10 = \boxed{140} \)
4. \( 220 + 10 = \boxed{230} \)
5. \( 310 + 10 = \boxed{320} \)
6. \( 400 + 100 = \boxed{500} \)
7. \( 200 + 100 = \boxed{300} \)
8. \( 657 + 1 = \boxed{658} \)
9. \( 359 + 1 = \boxed{360} \)
10. \( 330 + 10 = \boxed{340} \)
11. \( 570 + 10 = \boxed{580} \)
12. \( 300 + 10 = \boxed{310} \)
13. \( 100 + 100 = \boxed{200} \)
14. \( 500 + 100 = \boxed{600} \)

---

Boxed Final Answer:

\[
\boxed{
\begin{array}{l}
\text{Section A:} \\
1. 134, 135, \mathbf{136}, 137, \mathbf{138}, 139, \mathbf{140}, 141 \\
2. 30, 40, \mathbf{50}, 60, 70, \mathbf{80}, 90, \mathbf{100} \\
3. 100, 200, \mathbf{300}, 400, \mathbf{500}, 600, \mathbf{700}, 800 \\
4. 215, \mathbf{216}, 217, 218, \mathbf{219}, 221, \mathbf{222} \\
5. 120, 130, \mathbf{140}, 150, \mathbf{160}, 170, \mathbf{180}, 190 \\
6. 200, 300, \mathbf{400}, 500, \mathbf{600}, 700, \mathbf{800}, 900 \\
\\
\text{Section B:} \\
1. 152 + 1 = \mathbf{153} \\
2. 283 + 1 = \mathbf{284} \\
3. 130 + 10 = \mathbf{140} \\
4. 220 + 10 = \mathbf{230} \\
5. 310 + 10 = \mathbf{320} \\
6. 400 + 100 = \mathbf{500} \\
7. 200 + 100 = \mathbf{300} \\
8. 657 + 1 = \mathbf{658} \\
9. 359 + 1 = \mathbf{360} \\
10. 330 + 10 = \mathbf{340} \\
11. 570 + 10 = \mathbf{580} \\
12. 300 + 10 = \mathbf{310} \\
13. 100 + 100 = \mathbf{200} \\
14. 500 + 100 = \mathbf{600} \\
\end{array}
}
\]