Download Place Value and Money

Math Review
Topic 1
Domain: Number and Operations in Base Ten
Common Core Standard covered in this topic:
Use place value understanding to round whole numbers to the nearest 10 or 100.
Place value is the value of the place a digit has in a number. Be sure to be able to
name the place and value of each digit in the chart below.
The 2 is in the thousands place.
The 2 has a value of 2,000.
A period is a group of 3 digits in a number, starting from the right. Two periods
are separated with a comma.
2,
1
0
6
thousands ,
hundreds
tens
ones
thousands period,
ones period
Students should be able to read and write numbers through the thousands.
All numbers are made from the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.
There are different ways to represent a number.
Standard Form: 2,106
Expanded Form: 2,000 + 100 + 6
Word Form: two thousand, one hundred six
Students will locate and write numbers on a number line.
Students will identify the pattern on a number line.
Students will find the halfway number between two consecutive tens, hundreds, or
thousands.
Students will round numbers to the nearest ten or hundred.
When rounding to the tens place, look at the number in the ones place. If
the ones place is 0, 1, 2, 3, or 4, round down. If the ones places is 5, 6, 7, 8,
or 9, round up to the next ten.
47 rounds up to 50
172 rounds down to 170
When rounding to the hundreds place, look at the number in the tens place.
If the tens place is 0, 1, 2, 3, or 4, round down. If the tens places is 5, 6, 7,
8, or 9, round up to the next hundred.
428 rounds down to 400
862 rounds up to 900
Making an organized list can help with problem solving.
Example: What 3-digit numbers can fit these clues?
 The hundreds place is less than 3.
 The tens digit is greater than 7.
 The ones digit is greater than 8.
List of numbers:
289
299
189
199