Math Study Guide - Loudoun County Public Schools



Place Value Study Guide 1

Quiz 1

|Vocabulary Words: |

| |

|Place Value |

|Digit |

|Expanded Form |

|Word Form |

|Standard Form |

Example:

Hundred Thousands |Ten

Thousands |Thousands | |Hundreds |Tens |Ones | |1 |2 |8 |, |4 |7 |3 | |

128,473

• Standard Form: 128,473

(Hint: You only write the digits.)

• Expanded Form: 100,000 + 20,000 + 8,000 + 400 + 70 + 3

(Hint: When writing in expanded form, write the value of each digit and remember the plus sign +)

• Word Form: one hundred twenty-eight thousand, four hundred seventy-three

(Hint: When writing in word form, only write the words you say when you read the number in standard form. You always put a comma after the word thousand)

Value of Digits

• In the number 128,473, what is the value of the 8? 8,000, not just 8

• In the number 128,473, what is the value of the 2? 20,000, not just 2

8 tens = 80 ones 80 tens = 8 hundreds 800 ones = 8 hundreds

[pic]

Write each number in standard form.

1.

[pic]

____________________________________

2.

[pic]

_______________________________________

3.

[pic]

_________________________________________

Practice (Not required)

You should be able to read and write numbers in standard form, expanded form and word form.

Write each number in standard form.

1. eight hundred fifty-two thousand, seventy-five ______________

2. twelve thousand, seven hundred twenty-six ______________

3. 200,000 + 60,000 + 3,000 + 400 +70 +1 ______________

4. 5,000 + 300+ 2 ______________

Write each number in expanded form.

1. 734,905 __________________________________________________________________

2. 18,003 __________________________________________________________________

Write each number in word form.

1. 9,235 _____________________________________________________________________

2. 127,035 _____________________________________________________________________

3. 34,104______________________________________________________________________

You should be able to identify the place and the value of a digit.

Write the value of the underlined digit.

1. 25,357 ___________________

2. 534,024 ___________________

3. 5,001 ___________________

4. 789,425 ___________________

Identify the place of the underlined digit.

1. 36,367 ___________________

2. 9,420 ___________________

3. 458,323 ___________________

Tell which form each number is written.

Standard Form, Word Form, Expanded Form

1. 4,523 ___________________

2. 6,000 + 500 + 30 + 7 ___________________

3. five thousand, three hundred two ___________________

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