Place Value: Understanding Tens and Ones

Welcome to our Grade 1 Place Value lesson! Today, we're going to learn about tens and ones. Place value helps us understand what numbers really mean. When we know about place value, we can read, write, and understand bigger numbers easily!

What is Place Value?

Place Value Shows What Each Digit Means

Each digit in a number has a special place and value. In Grade 1, we learn about ones and tens.

Let's look at the number 42:

  • The 4 is in the tens place. It means 4 tens or 40.
  • The 2 is in the ones place. It means 2 ones or just 2.

So, 42 = 4 tens + 2 ones = 40 + 2 = 42

Let's See Place Value with Blocks

Example 1: The Number 25

Let's break down the number 25 into tens and ones:

10
10
1
1
1
1
1
25 = 2 tens + 5 ones = 20 + 5

The digit 2 is in the tens place, so it means 2 tens or 20.

The digit 5 is in the ones place, so it means 5 ones or just 5.

Example 2: The Number 38

Let's break down the number 38 into tens and ones:

10
10
10
1
1
1
1
1
1
1
1
38 = 3 tens + 8 ones = 30 + 8

The digit 3 is in the tens place, so it means 3 tens or 30.

The digit 8 is in the ones place, so it means 8 ones or just 8.

Fun Place Value Activities

Activity 1: Make a Place Value Chart

You can make your own place value chart at home!

  1. Get a piece of paper and draw two columns.
  2. Label the right column "Ones" and the left column "Tens".
  3. Use small objects like buttons or beans to represent numbers.
  4. Put groups of 10 in the tens column, and individual pieces in the ones column.
  5. Try making different numbers!

This helps you see how numbers are made of tens and ones.

Activity 2: Place Value Scavenger Hunt

Look for two-digit numbers around your home or classroom.

  1. Find numbers on clocks, books, pages, or food packages.
  2. For each number you find, say how many tens and how many ones it has.
  3. Draw or write the number, then show it using blocks or drawings.

This helps you practice seeing place value in everyday numbers!

Fun Facts About Place Value

  • Our number system is called the "base-10" system because it uses groups of 10.
  • Some ancient civilizations, like the Mayans, used different number systems based on 20!
  • The concept of zero as a placeholder is very important in our place value system.
  • Without place value, we would need different symbols for every number!

Let's Play a Place Value Game!

Try this quick place value game. How many tens and ones are in each number?

27

How many tens and ones?

2 tens, 7 ones 7 tens, 2 ones 20 tens, 7 ones
53

How many tens and ones?

5 tens, 3 ones 3 tens, 5 ones 50 tens, 3 ones
Print Practice Worksheet

Show What You Know!

Try these questions on your own:

  1. How many tens and ones are in the number 45?
  2. What number has 6 tens and 2 ones?
  3. Which is bigger: 3 tens + 5 ones OR 2 tens + 9 ones?
  4. If I have 4 tens and add 2 more tens, how many tens do I have now?
  5. Draw or make 73 using tens and ones blocks.

What's Next?

Once you understand tens and ones, you can learn about:

  • Comparing numbers using place value
  • Adding and subtracting two-digit numbers
  • Place value with hundreds, tens, and ones

For Parents and Teachers

Place value is a foundational math concept that helps children understand our number system. Here are some tips:

  • Use physical objects to represent tens and ones when teaching place value.
  • Practice regularly with everyday numbers like dates, pages, or addresses.
  • Connect place value to counting by tens and ones.
  • Show how place value helps with mental math and estimation.