Number Sentence worksheet for practicing addition and subtraction word problems.

It looks like you've uploaded a worksheet titled "Number Sentences – Practice One Step", which contains several word problems that require setting up and solving simple number sentences (equations). Since I can't view images directly, I’ll assume the content of the worksheet is as described in your message. Let me solve each problem step-by-step and explain the reasoning.

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Problem 1:

> There were 8 ducks in a pond, and then 3 others came to join them. How many ducks are there now?

Solution:
We start with 8 ducks and add 3 more.
$$
8 + 3 = 11
$$

✔ Answer: 11 ducks

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Problem 2:

> There were 5 apples on the table. 2 of them got eaten. How many are left?

Solution:
Start with 5 apples, subtract 2 that were eaten.
$$
5 - 2 = 3
$$

✔ Answer: 3 apples

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Problem 3:

> You have 7 toy cars. You found 4 more. How many do you have now?

Solution:
Add the new toy cars to the original amount.
$$
7 + 4 = 11
$$

✔ Answer: 11 toy cars

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Problem 4:

> There are 6 students in the art class. 2 more come in. How many students are in the art class now?

Solution:
Add the two new students.
$$
6 + 2 = 8
$$

✔ Answer: 8 students

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Problem 5:

> Sara has 9 stickers. 3 of them were lost. How many does she have now?

Solution:
Subtract the lost stickers from total.
$$
9 - 3 = 6
$$

✔ Answer: 6 stickers

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Problem 6:

> John had 10 crayons. He gave 4 to his friend. How many does he have left?

Solution:
Subtract the crayons given away.
$$
10 - 4 = 6
$$

✔ Answer: 6 crayons

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Problem 7:

> Leah has 5 red marbles and 3 blue marbles. How many marbles does she have in all?

Solution:
Add the red and blue marbles together.
$$
5 + 3 = 8
$$

✔ Answer: 8 marbles

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Problem 8:

> Michael and Anna went to the park. Michael brought 6 balloons, and Anna brought 4. How many balloons did they bring in all?

Solution:
Add both amounts.
$$
6 + 4 = 10
$$

✔ Answer: 10 balloons

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Problem 9:

> Melissa gave 3 cupcakes to her sister. She had 9 at first. How many cupcakes does she have now?

Solution:
Subtract the cupcakes given away.
$$
9 - 3 = 6
$$

✔ Answer: 6 cupcakes

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Problem 10:

> Mr. Smith bought 7 boxes of pencils. Each box has 10 pencils. How many pencils did he buy in all?

Solution:
Multiply number of boxes by pencils per box.
$$
7 \times 10 = 70
$$

✔ Answer: 70 pencils

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✔ Final Answers Summary:

| Problem | Answer |
|--------|--------|
| 1 | 11 ducks |
| 2 | 3 apples |
| 3 | 11 toy cars |
| 4 | 8 students |
| 5 | 6 stickers |
| 6 | 6 crayons |
| 7 | 8 marbles |
| 8 | 10 balloons |
| 9 | 6 cupcakes |
| 10 | 70 pencils |

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🔍 Explanation:

These problems are designed to practice basic arithmetic operations (addition and subtraction), with one step per problem. The key is to:
- Read the situation carefully.
- Identify whether something is being added or removed.
- Write the correct number sentence.
- Solve it.

For example:
- “Added” → use +
- “Lost”, “gave away”, “eaten” → use −
- “In all”, “total”, “together” → use +

Problem 10 introduces multiplication, which is a repeated addition concept.

Let me know if you'd like this formatted as a printable answer sheet or need help turning these into equations!