Topic 1

Vocabulary

100

When we ________ decimals we can use symbols like > < or =

compare

200

The number that is used as the factor when a number is written using exponents is called the ___________.

base

300

The position of a digit in a number that tells you the value of the digit is called its ___________.

place value

400

The number that tells you how many times a number is multiplied by itself is the ___________

exponent

500

A number written using only words is written using a ___________.

number name

Exponents

100

Write 10 x 10 x 10 x 10 x 10 x 10

10⁷

200

Write this number in standard form:

(8 x 10⁵) + (7 x 10⁴) + (6 x 10²)

870,600

300

Write this number in expanded form using exponents:

652,350

(6x10⁵)+(5x10⁴)+(2x10³)+(3x10²)+(5x10¹)

400

Write this number in standard form

(6x10³) + (2x10²) + (5x10¹) + 3

3,253

500

Write this number in expanded form using exponents. 

9,542

(9x10³) + (5x10²)+(4x10¹)+2

Decimals as Fractions

100

Write .543 as a fraction

543/1,0000

200

.009

9/1,000

300

.62

62/100

400

.765

765/1,000

500

.001

1/1,000

Expanded Form decimals

100

(9x100)+(6x10)+(5x1)+(3x1/10)+(2x1/100)+(7x1/1000)

965.327

200

(4x1,000)+(3x100)+(7x1)+(2x1/10)+(8x1/1,000)

4,307.208

300

Write in expanded form

45.789

(4x10)+(5x1)+(7x1/10)+(8x1/100)+(9x1/1,000)

400

2.36

(2x1)+(3x1/10)+(6x1/10)

500

9.3

(1x9)+(3x1/10)

Rounding &comparing decimals

100

Round 7.789 to the nearest tenth

9.8

200

Round 102.867 to the nearest hundredth

102.87

300

Compare

8.7 and 8.72

8.7 < 8.72

400

.004 and .04

.004<.04

500

7.100 and 7.1

7.100=7.1