Number and Operations in Base Ten
Understand Place Value
1. Understand that the three digits of a three-digit number represent
amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0
tens, and 6 ones. Understand the following
as special cases:
a. 100 can be thought of as a bundle of ten tens — called a “hundred.”
Base 10 Block Counting
Base 10 Block Place Value
Base Ten Blocks and Counting
Clothesline Missing Numbers
Learning Box
PacMan Place Value
Place the Penguins
Sheppard-Place Value
Base Blocks
b. The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to
one, two, three, four, five, six, seven, eight, or nine hundreds (and 0
tens and 0 ones).
A Lucky Place- place value to 1,000
Weight Watch
Short Place Value Tutorial
2. Count within 1000; skip-count by 5s, 10s, and 100s.
Line Dry- number patterns
Balloon Pop-Counting to 1000
Base 10 Block Counting
Base Ten Blocks and Counting
Ghost Blasters-counting by 10's
Netrover
Skip Counting by 2's, 5's, or 10's
3. Read and write numbers to 1000 using base-ten numerals, number
names, and expanded form.
Expanded Form
PacMan Place Value
4. Compare two three-digit numbers based on meanings of the hundreds,
tens, and ones digits, using >, =, and < symbols to record the results of comparisons.
Comparison Shoot Out
Soft Schools
Use Place Value Understanding and Properties of Operations to Add and Subtract
5. Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
Dream Box
6. Add up to four two-digit numbers using strategies based on place value and properties of operations.
Base 10 Block Counting
Find the Place Value Number
7. Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
Place Value within 1000
8. Mentally add 10 or 100 to a given number 100–900, and mentally subtract 10 or 100 from a given number 100–900.
9. Explain why addition and subtraction strategies work, using place value and
the properties of operations.
Understand Place Value
1. Understand that the three digits of a three-digit number represent
amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0
tens, and 6 ones. Understand the following
as special cases:
a. 100 can be thought of as a bundle of ten tens — called a “hundred.”
Base 10 Block Counting
Base 10 Block Place Value
Base Ten Blocks and Counting
Clothesline Missing Numbers
Learning Box
PacMan Place Value
Place the Penguins
Sheppard-Place Value
Base Blocks
b. The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to
one, two, three, four, five, six, seven, eight, or nine hundreds (and 0
tens and 0 ones).
A Lucky Place- place value to 1,000
Weight Watch
Short Place Value Tutorial
2. Count within 1000; skip-count by 5s, 10s, and 100s.
Line Dry- number patterns
Balloon Pop-Counting to 1000
Base 10 Block Counting
Base Ten Blocks and Counting
Ghost Blasters-counting by 10's
Netrover
Skip Counting by 2's, 5's, or 10's
3. Read and write numbers to 1000 using base-ten numerals, number
names, and expanded form.
Expanded Form
PacMan Place Value
4. Compare two three-digit numbers based on meanings of the hundreds,
tens, and ones digits, using >, =, and < symbols to record the results of comparisons.
Comparison Shoot Out
Soft Schools
Use Place Value Understanding and Properties of Operations to Add and Subtract
5. Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
Dream Box
6. Add up to four two-digit numbers using strategies based on place value and properties of operations.
Base 10 Block Counting
Find the Place Value Number
7. Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
Place Value within 1000
8. Mentally add 10 or 100 to a given number 100–900, and mentally subtract 10 or 100 from a given number 100–900.
9. Explain why addition and subtraction strategies work, using place value and
the properties of operations.