3. A class of 23 students is going to take a field trip. Each car can take 5 students. How many cars are needed to take all the children on the field trip? Show with numbers, words, and a picture or diagram.

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To determine how many cars are needed to take all 23 students on a field trip, we can follow these steps:

1. **Identify the known conditions:**
   - Total number of students: $$ S = 23 $$
   - Number of students per car: $$ C = 5 $$

2. **Calculate the number of cars needed:**
   - We need to divide the total number of students by the number of students each car can take. This can be expressed mathematically as:
   $$
   \text{Number of cars} = \frac{S}{C}
   $$

3. **Perform the calculation:**
   - Substitute the known values into the equation:
   $$
   \text{Number of cars} = \frac{23}{5}
   $$

4. **Calculate the result:**
   - Performing the division gives:
   $$
   \frac{23}{5} = 4.6
   $$
   Since we cannot have a fraction of a car, we round up to the next whole number. Therefore, we need 5 cars.

5. **Conclusion:**
   - The total number of cars needed to take all 23 students on the field trip is 5.

### Summary:
- **Total students:** 23
- **Students per car:** 5
- **Cars needed:** 5

### Diagram:
To visualize this, we can represent the cars and students as follows:

```
Car 1: [1, 2, 3, 4, 5]
Car 2: [6, 7, 8, 9, 10]
Car 3: [11, 12, 13, 14, 15]
Car 4: [16, 17, 18, 19, 20]
Car 5: [21, 22, 23]
```

In this diagram, each car is filled with students, and the last car has the remaining students. Thus, we confirm that 5 cars are needed to accommodate all 23 students.
5 cars are needed to take all 23 students on the field trip.

3. A class of 23 students is going to take a field trip. Each car can take 5 students. How many cars are needed to take all the children on the field trip? Show with numbers, words, and a picture or diagram.

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