chapter 1
DESCRIPTION
Chapter 1. PLACE 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 - PowerPoint PPT PresentationTRANSCRIPT
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