Question

Choose all expressions that are equal to 28.3.

27+ 0.91 + 0.39
0.01 + 28.02
9.9 + 9.8 + 9.6
0.02 + 28 + 0.28
27.3 + 1

Answer 1

Let's evaluate each expression to see if it equals 28.3.

1. **27 + 0.91 + 0.39**
- Calculating:
- \( 27 + 0.91 = 27.91 \)
- \( 27.91 + 0.39 = 28.3 \)
- This expression equals 28.3.

2. **0.01 + 28.02**
- Calculating:
- \( 0.01 + 28.02 = 28.03 \)
- This expression does not equal 28.3.

3. **9.9 + 9.8 + 9.6**
- Calculating:
- \( 9.9 + 9.8 = 19.7 \)
- \( 19.7 + 9.6 = 29.3 \)
- This expression does not equal 28.3.

4. **0.02 + 28 + 0.28**
- Calculating:
- \( 0.02 + 28 = 28.02 \)
- \( 28.02 + 0.28 = 28.3 \)
- This expression equals 28.3.

5. **27.3 + 1**
- Calculating:
- \( 27.3 + 1 = 28.3 \)
- This expression equals 28.3.

Based on the evaluations, the expressions that are equal to 28.3 are:

- **27 + 0.91 + 0.39**
- **0.02 + 28 + 0.28**
- **27.3 + 1**