Place Value Practice: Composing the Number 80 Using Tens and Units

How many units and/or tens do you need to make the number 80?

To solve this problem, we'll follow these steps:

• Step 1: Understand the number structure of 80 in terms of place value.
• Step 2: Determine the value in the tens place and units place.
• Step 3: Confirm choice with the given options.

Now, let's work through each step:

Step 1: Consider the number 80. In place value terms, the number 80 consists of tens and units. The place value of the tens digit represents complete sets of ten.

Step 2: The digit in the tens place for 80 is 8, meaning it consists of 8 sets of ten.

Step 3: Since 80 can be expressed as $80 = 8 \times 10 + 0 \times 1$, we can see that there are no units (or ones) left, only tens.

Therefore, the solution to the problem is that you need eight tens to make the number 80, and there are no additional units. This corresponds to option 3: Eight tens.