Place Value Flashcards
Cardinal Number
a number that says how many of something there are
Examples of Cardinal Numbers
1,2,3,4,5,6,7,8,9…
Ordinal Number
a number that tells the position of something in a list
Examples of Ordinal Numbers
1st, 2nd, 3rd, 4th, 5th…
Classify the bold number in the statement as cardinal or ordinal: There are 4 puppies in a line.
the number 4 is a cardinal number
Classify the bold number in the statement as cardinal or ordinal: The terrier is the 2nd puppy in line at the dog show.
2nd is an ordinal number because it is referring to the order of where the terrier is in the line of dogs
Define Base-10 Number System
a system based on the digits 0,1,2,3,4,5,6,7,8,9
Place Value
the value of a certain digit determined by where it resides in a number
Which direction do you move the decimal point to create a smaller number?
Left. Moving the decimal point to the left is the same as dividing by increments of 10 or multiplying by increments of 1/10.
Which direction do you move the decimal point to create a larger number?
Right. Moving the decimal point to the right is the same as multiplying by increments of 10.
2,468,905.731: What place is the 2 in?
Millions
2,468,905.731: What place is the 4 in?
Hundred Thousands
2,468,905.731: What place is the 6 in?
Ten Thousands
2,468,905.731: What place is the 8 in?
Thousands
2,468,905.731: What place is the 9 in?
Hundreds
2,468,905.731: What place is the 0 in?
Tens
2,468,905.731: What place is the 5 in?
Ones
2,468,905.731: What place is the 7 in?
Tenths
2,468,905.731: What place is the 3 in?
Hundredths
2,468,905.731: What place is the 1 in?
Thousandths
Round 507,291 to the nearest ten-thousands
510,000
What is the expanded form of 872?
800+70+2
Round 217 to the nearest Hundred
200
What is the expanded form of 4,235
4000+200+30+5
