Back

Practice and review the topic selected with illustrated flash cards!

Assess students’ understanding of the topic selected!

Print illustrated worksheets!

Engage students with interactive games.

❮

1

/

3

❯

What Is Reading and Writing Numbers to Trillion? • The number system we use is based on a place value system. Although there are only 10 different digits in this system, it is possible to order them in so many variations that the numbers represented are infinite. The number 4 by itself simply represents a value equal to 4 → (∆ ∆ ∆ ∆). The number 40, however, represents 10 times 4 and 400 represents 100 times 4. • Each digit in a number has a place value: Ones, tens, hundreds, thousands, 10 thousands, 100 thousands, millions, 10 millions, 100 millions, billions, 10 billions, 100 billions, trillions • Large numbers often appear in science and social studies texts, newspaper and magazine articles. For instance, the population of the United States is over 300,000,000 and many athletes make $1,000,000 or more each year. How to read and write numbers to trillion: • The number 498,375 is read: 498 thousand, 375 • 5,300,251 is read: 5 million, 300 thousand, 251 • 13,498,386,700 is read: 13 billion, 498 million, 386 thousand, 700 • 2,348,650,975,600 is read: 2 trillion, 348 billion, 650 million, 975 thousand, 600 © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.

• When we write large numbers, commas are used to separate groups of 3 digits. This helps the eye to identify the place values quickly. Which is easier to read? 58340382 OR 58,340,382 • Reading large numbers becomes automatic when you memorize the groupings between the commas. The first group on the right is the “hundreds.” The next group to the left is the thousands. The third group is the millions. The fourth group is the billions and the fifth group is the trillions 40,382 → 382 hundreds 58,340,382 → 340 thousands 58,340,382 → 58 millions 21,058,340,382 → 21 billions 19,021,058,340,382 → 19 trillions © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.

Try this! • Write the number read as: 2 billion, 456 million, 347 thousand, 456 ______________________________________________________________ • Write the number read as: 3 trillion, 400 billion, 789 million, 5 thousand, 804 ______________________________________________________________ • Read the number: 4,347,067,450,800 ___________________________________________________________ • How many billions? 50,345,984,140,000 ___________________________________________________________ • How many millions? 50,345,984,140,000 ___________________________________________________________ © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.