Goals

Sure! Here are some real-world problems involving the addition and subtraction of decimal numbers, along with their solutions.

### Problem 1: Adding Decimal Numbers

**Scenario:** Emily went to the store and bought three items. The prices were as follows:
- A notebook for $3.75
- A pen for $2.50
- A pack of stickers for $4.25

**Question:** What is the total amount Emily spent at the store?

**Solution:**
To find the total, we need to add the prices of all three items.

\[
3.75 + 2.50 + 4.25
\]

**Calculation:**
1. Add \(3.75\) and \(2.50\):
\[
3.75 + 2.50 = 6.25
\]
2. Now add \(4.25\):
\[
6.25 + 4.25 = 10.50
\]

**Total spent:** $10.50

---

### Problem 2: Subtracting Decimal Numbers

**Scenario:** Alex had $50.00. After buying a video game that cost $29.99, he wants to know how much money he has left.

**Question:** How much money does Alex have after his purchase?

**Solution:**
We need to subtract the price of the video game from Alex's original amount.

\[
50.00 - 29.99
\]

**Calculation:**
1. Subtract \(29.99\) from \(50.00\):
\[
50.00 - 29.99 = 20.01
\]

**Amount left:** $20.01

---

### Problem 3: Mixed Operations

**Scenario:** Sarah bought fruits from the market. She bought apples for $4.50, oranges for $3.75, and bananas for $2.80. She also returned the oranges and got a refund of $3.75.

**Question:** What is the total amount Sarah spent after her purchase and the refund?

**Solution:**
1. First, calculate the total spent on apples and bananas.
\[
4.50 + 2.80 = 7.30
\]

2. Now, subtract the refund from this total:
\[
7.30 - 3.75
\]

**Calculation:**
-\(7.30 - 3.75 = 3.55\)

**Total amount spent after refund:** $3.55

---

### Summary of Goals
These problems demonstrate how to add and subtract decimal numbers in real-world scenarios. If you have any specific problems or further examples in mind, feel free to ask!