To determine how many groups of 1,000 are needed to make 40,000, follow these steps:
1. **Identify the total amount you want to reach**: In this case, the total amount is 40,000.
2. **Identify the size of each group**: Each group consists of 1,000.
3. **Divide the total amount by the size of each group**: This can be calculated by using the formula:
Number of groups = Total amount / Size of each group
Number of groups = 40,000 / 1,000
4. **Perform the division**:
Number of groups = 40
Thus, you need **40 groups of 1,000** to make a total of 40,000.