Reading and writing numbers

• Why do we use place value when reading whole numbers?

  To understand what each digit represents
• What is the place value system?

  It assigns value to digits based on position
• How do you read the number 1,250?

  • 1 is in the thousands place: one thousand
  • 2 is in the hundreds place: two hundred
  • 5 is in the tens place: fifty
  • 0 is in the units place: not said
  • Together: one thousand two hundred fifty
• What should you remember when reading digits after the decimal point?

  Say each digit individually
• In the decimal number 25.765, what place is the digit five in?

  Thousandths place
• How does the position of a digit affect its value in a number?

  The position determines the digit's multiplier
• How do you position each digit in a whole number?

  Write down the place values from right to left
• What are the place values in the place value system?

  • Units: 1
  • Tens: 10
  • Hundreds: 100
  • Thousands: 1,000
  • Ten Thousands: 10,000
• In the decimal number 3.14, what place is the digit four in?

  Hundredths place
• If you have the number 3,456, how would you break it down?

  3 Thousands, 4 Hundreds, 5 Tens, 6 Units
• How is the decimal number 3.14 read?

  As "three point one four"
• What is the value of the digit in the Hundred Thousands place in 4,567,890?

  5
• What is the place value of the digit 5 in the number 5,281?

  Thousands
• How do you start reading decimal numbers?

  With the whole number part
• How would you write the number 0.708 in point notation?

  0.708
• How many millions are in the number 4,567,890?

  4 millions
• What is the first step to write whole numbers correctly?

  Identify the places
• What is the correct way to write the digits for the number 5,281?

  5 Thousands, 2 Hundreds, 8 Tens, 1 Unit
• What is the value of the digit in the Hundreds place in 4,567,890?


  8
• What is the value of the hundreds place?

  100
• What is the first step to write decimal numbers using point notation?

  Identify the whole number part
• What is the number 4,567,890 in words?

  Four million, five hundred sixty-seven thousand, eight hundred ninety
• What place values do the digits 7, 0, and 8 occupy in 0.708?

  7 is tenths, 0 is hundredths, 8 is thousandths
• What is the whole number part of 25.765?

  25
• In the number 12.35, what is the whole number part?

  12
• What is the value of the millions place?

  1,000,000
• What is the value of the hundred thousands place?

  100,000
• How would you write the number 12.35 in point notation?

  12.35
• What is the written form of the number 5,281?


  5,281
• What is the value of the ten thousands place?

  10,000
• How do the digits in the number 123,456 represent different values?

  • 1 represents 100,000
  • 2 represents 20,000
  • 3 represents 3,000
  • 4 represents 400
  • 5 represents 50
  • 6 represents 6
• What does the digit in the tenths place represent?

  One-tenth of a whole
• What is the value of the units place?

  1
• What place values do the digits 3 and 5 occupy in 12.35?

  3 is tenths, 5 is hundredths
• What does each position in the place value system represent?

  • Units: Rightmost position, value 1
  • Tens: Second from right, value 10
  • Hundreds: Third from right, value 100
  • Thousands: Fourth from right, value 1,000
  • Ten Thousands: Fifth from right, value 10,000
  • Hundred Thousands: Sixth from right, value 100,000
  • Millions: Seventh from right, value 1,000,000
• How do you write the number 23,789,123 in words?

  • Twenty-three million
  • Seven hundred eighty-nine thousand
  • One hundred twenty-three
• What is the decimal part of 25.765?


  .765
• How is the decimal number 25.765 read?

  As "twenty-five point seven six five"
• What is the decimal part of 3.14?


  .14
• Why is it important to place the decimal point correctly?

  It separates the whole number from the fractional part