# Lesson 3: Digits to the Left and Right

## Activities

### Activity 1: Working With Whole Numbers

Materials: calculator, Interactive Notebook
Read the information and answer the questions on the "Digit Values" sheets. When you get to the second sheet, remember that a fraction is just another way to show division. So, 1/10 means "1 divided into 10 pieces" or "1 divided by 10." When you've finished reading both sheets, you can store them in your Interactive Notebook.
Student Activity Page
Student Activity Page
During this activity, your child will read information and answer questions to solidify his understanding of how values change when we move left and right in whole numbers. He'll review that a fraction is another way to write a division sentence. So, 1/10 means "1 divided into 10 pieces" or "1 divided by 10."

• 3 × 10 = (30)
• 30 × 10 = (300)
• 300 × 10 = (3,000)
• 3,000 × 10 = (30,000)
• 30,000 × 10 = (300,000)
• What happens each time you multiply by 10? (the number gets 10 times greater/another 0 is added to the end of the number)
• 342,560 — two thousands, 2,000, or (2 × 100)
• 428,901 — two ten thousands, 20,000, or (2 × 10,000)
• How many cents is this? (100 cents)
• What is 1/10 of this group of dimes? (one dime) How many cents is this? (10 cents)
• 400,000 ÷ 10= (40,000)
• 40,000 ÷ 10= (4,000)
• 4,000 ÷ 10= (400)
• 400 ÷ 10=(40)
• Think About It! If you REALLY love jellybeans, would you rather have 400 jellybeans OR 1/10 of 40,000 jellybeans? Why? (1/10 of 40,000 because that equals 4,000 jellybeans)
• Sandy took 13,000 steps in one day. Mitchell took 1/10 of 130,000 steps in the same day. Who took more steps that day? (neither, they both took 13,000 steps)

### Activity 2: Working With Decimals

Watch the video at the following web link to review some basic information about decimal numbers.