Question

Use mental math to find the equation that are true. Select all that apply


400 divide by 80 = 50
4,000 divide by 80 = 5
400 divide by 8 = 50
40,000 divide by 800 = 50
40,000 divide by 80 = 500

Answer 1

Let's evaluate each equation one by one:

1. **400 ÷ 80 = 50**
This is incorrect; \(400 ÷ 80 = 5\).

2. **4,000 ÷ 80 = 5**
This is incorrect; \(4,000 ÷ 80 = 50\).

3. **400 ÷ 8 = 50**
This is correct; \(400 ÷ 8 = 50\).

4. **40,000 ÷ 800 = 50**
This is correct; \(40,000 ÷ 800 = 50\).

5. **40,000 ÷ 80 = 500**
This is correct; \(40,000 ÷ 80 = 500\).

Based on the evaluations, the true equations are:
- **400 ÷ 8 = 50**
- **40,000 ÷ 800 = 50**
- **40,000 ÷ 80 = 500**