# Lesson 4 Write Three-digit Numbers

• Let’s represent three-digit numbers using base-ten numerals.

## Warm-up How Many Do You See: Blocks

How many do you see and how do you see them?

## Activity 1 Place Value Riddles

Solve each riddle and write the three-digit number. Use the table to help you organize the digits.

riddle

hundreds

tens

ones

three-digit number

1

2

3

4

5

6

1. I have 2 ones, 7 tens, and 6 hundreds.

2. I have 3 ones, 5 tens, and 2 hundreds.

3. I have 7 hundreds, 5 ones, and 3 tens.

4. I have 5 hundreds, no tens, and 9 ones.

5. I have 4 ones, 6 tens, and 3 hundreds.

6. I have 8 tens, 1 hundred, and no ones.

## Activity 2 Mixed-up Digits

Find the number that makes each equation true. Use base-ten blocks or diagrams if they help.

1. 4 hundreds 6 tens 2 ones

2. 7 ones 2 hundreds 6 tens

3. 3 tens 5 hundreds

4. 325 hundreds ones   tens

5. 70 300 2

6. 836 6 800

7. Clare and Elena worked to find the number that makes the equation true:

7 ones  3 hundreds

• Clare wrote 7 ones 3 hundreds 37.

• Elena wrote 7 ones 3 hundreds 307.

Who do you agree with? Explain.

## Problem 1

1. What three-digit number has 5 hundreds, 1 ten, and 6 ones?

2. What three-digit number has 6 tens, 1 hundred, and 5 ones?

3. What three-digit number has 1 one, 5 tens, and 6 hundreds?