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Instructions

Let's explore numbers! Look at each number and figure out how many Tens and Ones it has. Have fun being a number detective!

Part 1: Break it Down!

Look at the number. Write how many tens and ones are in each one.

The number is 47.
It has Tens and Ones.
The number is 82.
It has Tens and Ones.
The number is 19.
It has Ten and Ones.
The number is 50.
It has Tens and Ones.

Part 2: Build the Number!

Use the tens and ones to write the whole number.

3 Tens and 6 Ones make the number .
9 Tens and 1 One make the number .
7 Tens and 0 Ones make the number .
5 Tens and 8 Ones make the number .

Part 3: What's the Value?

Look at the underlined digit. What is its real value?

Example: In 25, the value of the 5 is 5. In 25, the value of the 2 is 20.

In the number 63, the value of the underlined digit is .
In the number 48, the value of the underlined digit is .
In the number 99, the value of the underlined digit is .
In the number 15, the value of the underlined digit is .

Part 4: Mystery Numbers!

Read the clues and write the mystery number.

I have 2 tens and 4 ones. What number am I?
I have 8 ones and 6 tens. What number am I?

Answer Key

Part 1: Break it Down!

  1. The number is 47. It has 4 Tens and 7 Ones.
  2. The number is 82. It has 8 Tens and 2 Ones.
  3. The number is 19. It has 1 Ten and 9 Ones.
  4. The number is 50. It has 5 Tens and 0 Ones.

Part 2: Build the Number!

  1. 3 Tens and 6 Ones make the number 36.
  2. 9 Tens and 1 One make the number 91.
  3. 7 Tens and 0 Ones make the number 70.
  4. 5 Tens and 8 Ones make the number 58.

Part 3: What's the Value?

  1. In the number 63, the value of the underlined digit is 3.
  2. In the number 48, the value of the underlined digit is 40.
  3. In the number 99, the value of the underlined digit is 9.
  4. In the number 15, the value of the underlined digit is 10.

Part 4: Mystery Numbers!

  1. I have 2 tens and 4 ones. What number am I? 24
  2. I have 8 ones and 6 tens. What number am I? 68
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