Organizer
Houghton Mifflin Harcourt

Numbers 11-19

For Students K - 2nd Standards
Develop the concept that numbers from 11 to 19 are essentially a 10, plus more! The first two of the six story problems on this sheet are scaffolded with pictures. Learners compose and decompose numbers to answer how many 10s and how...
Worksheet
Curated OER

Working with 10s and 1s

For Students 1st - 2nd Standards
Can your first graders count by 1s? What about by 10s? Use this graphic learning exercise to help youngsters visualize place value and counting. They count how many sets of 1s or 10s they see, then they draw a given number of 1s or 10s....
Assessment
Illustrative Mathematics

Making 124

For Students 2nd Standards
How many ways can you make the number 124 using only tens and ones? Use a task that prompts young mathematicians to make 124 in as many ways as possible.
Worksheet
Curated OER

One and Tens Place Value

For Students 1st - 3rd
Counting is much easier when the objects are arranged in groups of 10! This place-value practice sheet helps young mathematicians grasp ones and tens place value through three exercises. First, they complete three missing addend...
PPT
Curated OER

ONES and TENS

For Teachers 1st
Before you can teach place value or regroup, you need to provide students with a concrete idea of the definition of ones and tens. Here, ones and tens are defined and then shown several different ways in order to represent several...
Worksheet
Curated OER

Ones and Tens Place Value

For Students 1st - 3rd
As scholars examine place value, these exercises help them incorporate addition and grouping. First, they answer three missing-addend questions, each with 10 as the given addend. Because all of the missing numbers are single-digit, this...
Lesson Plan
Curated OER

Ten by Ten

For Teachers K - 2nd Standards
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...
Lesson Plan
Curated OER

Playing with Tens and Ones

For Teachers 1st
First graders complete a number of activities that increase their number sense and use of simple operations. They use dice and worksheets to make two-digit numbers and to record them, they count by tens and ones, and order numbers using...
Lesson Plan
Curated OER

Tens and Ones

For Teachers 1st - 2nd
In this counting by groups worksheet, students practice counting by tens and then by ones. Students count the rows of ten and single cubes and then write how many cubes there are all together.
Worksheet
Math Salamanders Ltd.

Place Value-Tens and Ones 1

For Students K - 1st Standards
In this place value worksheet, students count the base 10 squares, counting tens first and then ones. Students write the total amount counted. A reference website is provided for additional activities.
Lesson Plan
Curated OER

Seeing Numbers In Tens And Ones

For Teachers 2nd
Second graders develop the skill of place values up to the tens place. They practice identifying the values of 2 digit numbers and writing the correlating values with counting. They use the example of money to make the lesson more...
Worksheet
Curated OER

Adding Blocks: Hundreds, Tens and Ones

For Students K
In this adding blocks:  hundreds, tens and ones activity, students count the blocks, write the numeral for hundreds, tens and ones, then write the total number of blocks.
Lesson Plan
Curated OER

Balloon Bop: Skip Counting

For Teachers K - 3rd
Practice counting in patterns and skip counting by 1, 5, and 10. Once the patterns have been taught, teams of 5 or 6 learners -- holding hands in circles -- skip count each time they collectively bounce a balloon up into the air. Early...
Lesson Plan
Curated OER

Counting, Properties of Numbers, and Reasoning about Numbers

For Teachers K - 3rd
Five days of lessons develop number sense and counting patterns, including odd and even numbers, 5s and 10s, doubles, and ways to make 10. Each session opens with fun finger play to reinforce counting and reasoning about numbers. Various...
Lesson Plan
Curated OER

Primary Counting Skills

For Teachers K - 1st
Class members drill and practice counting skills from 1 to 20. They count along with a puppet and when the puppet makes a mistake, they correct it. In pairs, they connect cubes to make a train and count the number used. On the last of...
Lesson Plan
Curated OER

Counting Circles

For Teachers K Standards
Here is another learning game that will engage your kindergartners and support them with their counting fluency. Forming a circle where everyone faces inward, choose a counting sequence (counting frontward or backward) with no more than...
Printables
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Houghton Mifflin Harcourt

Unit 4 Math Vocabulary Cards (Grade 1)

For Students 1st Standards
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.
Assessment
Illustrative Mathematics

Three Composing/Decomposing Problems

For Students 2nd Standards
Practice composing and decomposing numbers in base-ten using three word problems. Each problem presents a different scenario requiring learners to explain their thinking, find the number of ones, and find out different ways to make a...
PPT
Curated OER

Counting on a 100 Square

For Teachers 1st - 2nd
Counting by twos, fives, and tens is a great way to build the skills and number sense needed to better grasp the concept of multiplication later on. Here are six number charts to 100, each chart is highlighted and requires the class to...
PPT
Curated OER

Unidades y Decenas

For Teachers 2nd
Using examples of numbers less than one hundred, this presentation in Spanish provides a visual representation of arrays. It would be a great way to help learners understand the concept of tens and ones.
Activity
Curated OER

K-5 Mathematics Module: Number and Number Sense

For Students K - 5th Standards
Reinforce number sense with a collection of math lessons for kindergarteners through fifth graders. Young mathematicians take part in hands-on activities, learning games, and complete skills-based worksheets to enhance proficiency...
Worksheet
Curated OER

Subtract Tens and Ones

For Students 2nd - 3rd
in this finding the differences worksheet, students subtract one-digit and two-digit numbers from two-digits written in place value blocks with some regrouping. Students solve 12 problems.
Lesson Plan
Curated OER

Number Rods

For Teachers K Standards
Working in a math center or an "I finished early" work station, young mathematicians will match in sequence pre-set-up rods of unifix cubes to numbers on a number line. To help differentiate tens from ones, use different colors to...
Worksheet
Curated OER

Number Patterns

For Students 3rd - 5th
Which number comes next? The great part about this number sequencing learning exercise is that it increases in difficulty so some learners who aren't challenged by the first few will definitely meet their match with the last couple. In...