Chapter OneLesson One

The diameter of Jupiter is about 88,700 miles.

Pluto can be as many as 4,500,000,000 miles

from the sun.

Standard Form: 38,093

Expanded Form: 30,000 + 8,000 + 90 + 3 Word Form: thirty-eight thousand, ninety-

three

Ways to Demonstrate Numbers

Practice

Using the standard form, write the word form and write the value of the red digit.

1) 9,235 * Nine thousand, two hundred thirty-five

* Nine thousand

2) 25,503,400 *Twenty-five million, five hundred

three thousand, four hundred * Five million

3) 342,124,567,111 * Three hundred forty-two billion, one hundred twenty-four million, five hundred sixty-seven thousand, one hundred eleven

* 40,000,000,000

4) 18,000,036 * Eighteen million, thirty-six

* 10,000,000

5) 17,983,024,000 * Seventeen billion, nine hundred eighty-three million, twenty-four thousand

* 80,000,000

Write these in expanded form.

6) 7,357 * 7,000 + 300 + 50 + 7

7) 761,324 * 700,000 + 60,000 + 1,000 + 300 + 20 +4

8) 1,230,000 * 1,000,000 + 200,000 + 30,000

9) 30,893 * 30,000

800

90

+ 3

10) 360,080,572

300,000,000

60,000,000

80,000

500

+ 70

2

Write each number in standard form.

11) 90,000,000 + 5,000,000 + 300 + 7

* 95,000,307

12) Thirty billion, forty-eight million

* 30,048,000,000

13) 50,000,000 + 8,000,000 + 40,000

+ 6,000 + 300 + 9

* 58,046,309

In the 2000 U.S. Census, Texas’s population was 20,851,820, and Wyoming’s was 493,782. Give each population after:

14) An increase of 100,000 * 20,951,820 and 593,782

15) A decrease of 10,000 * 20,841,820 and 483,782

16) 999 + 1 = * 1,000

17) 10,000 – 1 = * 9,999

18) 10 x 10 x 10 x 10 = * 10,000

3,492,568

3,490,568

Name the smallest digit’s place value and replace it with a zero.

490,568

90,568

92,173,256Name the smallest digit’s place value and replace it with a zero.

90,073,05692,073,256

90,070,05690,070,006

90,070,000

971,341,874Name the smallest digit’s place value and replace it with a zero.

970,340,874970,040,874

970,000,870900,000,800