CHAPTER 1PLACE VALUE

LESSON 1 – PLACE VALUE THROUGH MILLIONS Standard form: 804,932,008 *Each group of three digits is called a period and is

separated by a comma

Word form: eight hundred four million, nine hundred thirty-two thousand, eight

*When you get to the comma, say the period *

Expanded form: 8 x 100,000,000 + 4x 4,000,000 + 9x 100,000 + 3 x 10,000 + 2 x 1,000 + 8

*Split up the number using place value. For example, an 8 in the hundred millions place equals 8 x 100,000,000.

LESSON 2 – COMPARE AND ORDER WHOLE NUMBERS• You can line up the numbers to compare

• Example: 76,552 Ο 76,852

76,552 76,852 5 < 8

so

76,552 < 76,852

LESSONS 3 & 4 – RELATING FRACTIONS AND DECIMALS

Examples:

7 = 0.7 54 = 0.54 17 = 0.017

10 100 1,000

LESSONS 5 & 6 – PLACE VALUE OF DECIMALS

Word form 0.55

1. Say the decimal as a whole number fifty-five

2. Label the place value. In what column does the number end?

hundredths

Word form is fifty-five hundredths

LESSONS 5 & 6 – PLACE VALUE OF DECIMALS

Standard form twenty-seven thousandths

1. What is the place value? Thousandths = 0. __ __ __

2. Place the numbers to the right 0. 0 2 7

Standard form is 0.027

LESSONS 5 & 6 – PLACE VALUE OF DECIMALS

Expanded form 0.95

Multiply each number by it’s place value.

0.95 = (9 x 1/10) + (5x 1/100)

LESSONS 7 & 8 – COMPARE AND ORDER DECIMALS• You can line up the numbers to compare

• Example: 0.592 Ο 0.512

0.592 0.512 9 > 1

so

0.592 > 0.512