Lesson 4 Write Threedigit Numbers
Let’s represent threedigit numbers using baseten numerals.
Warmup 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 threedigit number. Use the table to help you organize the digits.
riddle  hundreds  tens  ones  threedigit number 

1  
2  
3  
4  
5  
6 
I have 2 ones, 7 tens, and 6 hundreds.
I have 3 ones, 5 tens, and 2 hundreds.
I have 7 hundreds, 5 ones, and 3 tens.
I have 5 hundreds, no tens, and 9 ones.
I have 4 ones, 6 tens, and 3 hundreds.
I have 8 tens, 1 hundred, and no ones.
Activity 2 Mixedup Digits
Find the number that makes each equation true. Use baseten blocks or diagrams if they help.
4 hundreds
6 tens 2 ones 7 ones
2 hundreds 6 tens 3 tens
5 hundreds 325
hundreds ones tens 70
300 2 836
6 800 Clare and Elena worked to find the number that makes the equation true:
7 ones
3 hundreds . They wrote different answers.

Clare wrote 7 ones
3 hundreds 37. 
Elena wrote 7 ones
3 hundreds 307.
Who do you agree with? Explain.

Practice Problem
Problem 1
What threedigit number has 5 hundreds, 1 ten, and 6 ones?
What threedigit number has 6 tens, 1 hundred, and 5 ones?
What threedigit number has 1 one, 5 tens, and 6 hundreds?