2. Place Value 28 Fractions and Decimals 25

3. 6 billion 528 million 173 thousand 495 6 5 2 8 1 7 3 4 9 5 Place Value 28 Fractions and Decimals 25

4. 6 7 5 2 8 Place Value 28 Fractions and Decimals 25

5. Place Value 28 Fractions and Decimals 25 1.Draw a multiplicative place value chart, including as much information as you can. 2.Explain what it means to a friend. Reflection: How does grouping digits in 3s help us to read large numbers? Investigation: Problem Solving Alan recorded this place value chart. What is the value of the column to the left of the 100 billions column? Why? What is the value of the column to the right of the 100 thousandths column? Why?

6. Place Value 28 Fractions and Decimals 25

7. Place Value 28 Fractions and Decimals 25 Investigation: 1.A really great app named simply ‘really big numbers’ is freely available on the Internet. 2.Input a number and the program writes it out using place value. 3.(Simply Google ‘really big numbers’ and it’s the first hit.) Reflection: How does grouping digits in 3s help us to read large numbers?

8. Place Value 28 Fractions and Decimals 25 Investigation: 1.To ensure you understand the size of 1 million, work out how long it would take you to count aloud to 1 million. Reflection: How big is a million?

9. Place Value 28 Fractions and Decimals 25 Investigation: 1.Work out how long it would take a person to earn $1 million if they earned, $50 000 per year. Reflection: How big is a million?

10. Place Value 28 Fractions and Decimals 25 Investigation: 1.Investigate the amount of money actors are paid to make 1 movie. 2.Work out how long it would take a person on $50 000 per year to earn the same amount. Reflection: How big is a million?