Technology assignment

• English

What is place value?

Place Value of ones and tens  

Objective: I can explain and identify the ones 

and tens place value in a two-digit number 

using units and rods. 

So, what is place value?

• Place value tells us how much each digit in a number is worth.
• Digits on the left have a larger value than digits to the right.

Example: 

24

This is a 2 in the TENS PLACE which is the same as 20

This is a 4 in the ONES PLACE which is the same as 4

What are units and rods?

• A unit represents a value of one. There is one unit pictured below so the value is 1 

• A rod represents a value of ten. Ten units make a rod. There is one rod pictured so the value is 10.

1
2
3
4
5
6
7
8
9

Units

What is the value pictured below?

1. 4
2. 10
3. 7
4. 6

10
20
30
40
50

Rods

What is the value pictured below?

1. 60
2. 50
3. 5
4. 6

Example

24

 TENS PLACE= Rods

ONES PLACE= Units  

27

37

31

How many rods and units are needed to make 42? 

Green light means we do a whole class discussion.

How many rods and units are needed to make 36?

Yellow light means you discuss with the person to your left and right.

How many rods and units are needed to make 58? 

Red light means you work individually.

Which option correctly shows 33?

1. 
2. 
3. 
4. 

Rate your understanding of place value using rods and units

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