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Illustrative Mathematics
Hundred Chart Digit Game
Math games, especially in the primary grades, provide great opportunities for developing the number sense of young mathematicians. Working in pairs with a deck of single-digit cards, students take turns drawing two cards and reading the...
Curated OER
Ten by Ten
Learners participate in hands-on activities using a hundreds chart and counting toes and fingers. They discover the patterns that are created when counting by ten. After a lecture/demo, students practice by using a worksheet embedded in...
Curated OER
Regroup Ones as Tens: Practice
In this regrouping numbers worksheet, students learn to regroup numbers by writing the tens and ones for each number set and then writing the number. Students finish with one test prep question using regrouping.
Curated OER
Liquid Volume and Mass Word Problems
As your scholars become comfortable with liquid mass and volume units, give them these addition and subtraction word problems to help apply the skill. There are no conversion or fraction skills involved. After solving four word problems,...
Curated OER
Making Change - Bills And Coins
Here is an interactive instructional activity that allows learners to practice counting change with bills and coins, make change for a dollar, and practice their subtraction skills. The bills used are ones, fives, tens, twenties, and...
Curated OER
Ten More and Ten Less
Get learners to analyze two-digit numbers based on place value, and use manipulatives to add and subtract both 1 and 10. A place value chart is available, and you can project it during guided practice. Through visualizing...
Houghton Mifflin Harcourt
Unit 4 Math Vocabulary Cards (Grade 1)
Support math vocabulary using a set of 25 flashcards. The set consists of a variety of bold-faced word cards and corresponding labeled picture cards. Terms include even numbers, regrouping, skip counting, and more.
Houghton Mifflin Harcourt
Unit 5 Math Vocabulary Cards (Grade 2)
Reinforce math vocabulary with a set of flash cards. Two types make up a set of 10 cards; a word card and a labeled, picture representation. Terms included are estimate, ones, regroup, and more.
Curated OER
Deciding When to Regroup
In this regrouping instructional activity, 2nd graders complete a chart by determining whether 5 subtraction problems need to be regrouped or not and writing the tens and ones on the lines provided for each one. Students study the first...
Curated OER
Subtraction and Unknown Addends (to 20)
How many more gallons of fuel does Mr. George need to fill his car to capacity? This word problem uses the unknown addend strategy to get scholars subtracting and thinking about the relationship between mathematical...
Curated OER
Relating Facts to Place Value
For this place value worksheet, students use the given number and write how many tens and ones are in each number. Students draw a line to the matching number sentences for each place value. Students finish with a place value word problem.
Curated OER
Representing Numbers to 50
In this mathematics worksheet, 1st graders identify two-digit numbers that show tens and ones. Then they write how many tens and ones there are and place the number in the boxes given.
Curated OER
Decide When to Regroup - Reteach
In this addition worksheet, 3rd graders decide when to regroup in addition problems after reviewing the steps. They use a workmat and place value blocks as they complete 4 problems. They identify how many tens and ones there are and...
Curated OER
Borrow to Subtract
In this finding the difference worksheet, students subtract two-digits from two-digit numbers written in tens and ones boxes with regrouping. Students solve 12 problems.
Curated OER
Make Ten Bundles
How many rolls until you get to 100? Young mathematicians will have a blast with this place value game, which has them rolling a die and placing a corresponding number of popsicle sticks in the "ones" column of their mat. Once they get...
Primary National Strategy
Ordering and Counting
Are you in need of a 5-day unit intended to teach little learners how to count to 20? This is a well-structured complete set of lessons which employ a variety of methods to instruct learners about various ways to count from 1 to 20. They...
Curated OER
100 Or Bust!
Elementary schoolers use their understanding of place value to develop a strategy for a number game. For this lesson, pupils use place value to play "100 or Bust" and figure out a good winning strategy. These kinds of math games are...
Curated OER
Number Value Assessment
Quiz your second graders with this set of math worksheets involving place value, word problems, number sequence, greater than/less than, coin value, expanded form, and much more! Most have multiple choice answers provided, and generally...
Curated OER
Ways to Make Hundreds
How many ways can you make 200 using 1s, 10s, and 100s? Learners will build number sense, a basic understanding of place value, and prep for future lessons on expanded form with this simple worksheet. They are given 6 numbers, they write...
K-5 Math Teaching Resources
Base Ten Hundreds Flats (4 per Page)
Looking for a base 10 hundreds flat? Look no further! Here, you'll find four base 10 hundreds flats with space to write under each model.
Curated OER
Place Value to 1,000
Second graders study the concept of place value with hundreds, tens, and ones. In the place value lesson, 2nd graders demonstrate their prior knowledge of place value with tens and ones. Students are then introduced to place value with...
Curated OER
The Hundreds Place
Young mathematicians examine images of counting cubes to determine the value of each set. The arrangement values include hundreds, tens, and ones. Encourage scholars to utilize place value knowledge instead of addition and counting with...
Curated OER
Project Interactive--Stem and Leaf Plotter
In this excellent stem and leaf plotter worksheet, students construct, arrange and write a report of how to interpret the leaves they collect in this data analysis. Students answer 4 detailed questions regarding the data analysis...
Curated OER
Regroup Ones and Tens
In this addition instructional activity, students add upward 15 2 and 3-digit whole numbers problems. Students complete 3 tables utilizing Algebra functions and answer 2 test prep questions.