Rounding
Giving an approximate value to a
number – About how much a
number is worth
The names of the place of each digit
in a number
Place value
Digit
Value
The digits are represented as 0, 1, 2,
3, 4, 5, 6, 7, 8, and 9. The number
10 is a 2 digit number
Value tells what a digit is worth in its
place – a 6 in the thousands place is
worth 6,000
A combination of digits put together
Number
The way you typically see a number
– ex – 496
Standard form
Expanded form
Word form
Numbers stretched out to show the
value of each digit – ex - 400+90+6
Numbers written out in words – ex
– four hundred ninety-six
Compare
Greater than
Less than
Determining the similarity or
difference of numbers. To compare
numbers, you always start in the
largest place value
The first number in a comparison is
larger than the second – ex –
364>346
The first number in a comparison is
smaller than the second – ex –
346<364
The two numbers being compared
are the same – ex - 346=346
Equal to