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Lesson Plan
Curated OER

Regrouping Ten Ones for One Ten

For Teachers 2nd - 3rd
Students explore regrouping. In this hands-on math place value lesson, students construct models using connecting cubes and place value mats to solve simple addition problems that require regrouping.
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Lesson Plan
Curated OER

Ten More and Ten Less

For Teachers K - 3rd
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 numbers,...
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Lesson Plan
Curated OER

Two Digit Addition with Regrouping

For Teachers 1st - 3rd
Students explore the concept of "regrouping." For this 2-digit addition with regrouping lesson, students create visual representations of combinations that equal ten using a tens frame. Students use manipulatives to represent the tens...
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Worksheet
Curated OER

Adding Up

For Students 1st - 2nd
Sail through the land of three addends with this nautical-themed addition learning exercise. Scholars begin by using mental math to add seven sets of three numbers located on sailboats. Next, they apply this concept to eight horizontally...
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Assessment
Los Angeles County Office of Education

Assessment for the California Mathematics Standards Grade 3

For Students 3rd Standards
Assess scholars' knowledge with a 22-page assessment that covers place value, patterns, probability, estimation, measurement, geometric figures; and their ability to add, subtract, multiply and divide proficiently. 
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Activity
Making Math More Fun

Making Math More Fun

For Teachers 2nd - 6th Standards
Address fundamental math skills with a series of fun math board games. With 25 games that focus on addition, subtraction, multiplication, division, place value, and percentages, kids will quickly find that math practice is their favorite...
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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.
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Worksheet
Curated OER

Add and Subtract within 1000

For Students 1st - 2nd
Here are some practice problems with adding and subtracting three-digit numbers. Scholars complete three addition problems and three subtraction problems. None of these involve carrying over or regrouping. There are only two numbers to...
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Worksheet
Math Salamanders Ltd.

Adding Decimals Tenths Sheet 2

For Students 3rd - 5th Standards
In this adding decimals worksheet, students solve 60 addition problems. Both addends in each problem are decimals; in some problems, three decimals must be added.
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Lesson Plan
Curated OER

Study Buddies: Adding Two-Digit Numbers

For Teachers 1st - 2nd
Some times a simple lesson is all you need. Here are 2 worksheets that can be used as a lesson on problem solving, addition, and partner work. The first worksheet has learners use a tens and ones charts to practice adding simple...
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Lesson Plan
Curated OER

Place Values-Adding

For Teachers 5th - 6th
Students find place value. In this place value lesson, students are shown examples on the board by their teacher. A ten-problem worksheet is included. Problems involve only the hundreds and ten thousands place.
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Worksheet
Curated OER

Relating Facts to Place Value

For Students 4th - 5th
In this place value worksheet, learners 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. Learners finish with a place value word problem.
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Worksheet
Curated OER

Place Value to 10,000

For Students 3rd - 4th
In this ten thousands place worksheet, students review the table that shows the diameters of the largest moons in the solar system and the planet it orbits. Students use the table to help them understand numbers with a place value of...
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Worksheet
Raytheon

Adding and Subtracting Decimals

For Students 5th - 7th
For this adding and subtracting decimals instructional activity, students add and subtract numbers with decimals in word problems. Students complete 12 word problems.
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Lesson Plan
Curated OER

Investigation - Who is Right?

For Teachers 3rd
Third graders investigate two mathematic scenarios and determine which is correct. They compare adding columns and places (such as the tens place, hundreds place, and so on) and familiarize themselves with how to add larger numbers.
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Lesson Plan
Illustrative Mathematics

Number of the Day

For Teachers K - 2nd Standards
Daily routines not only help to manage classrooms, they can also provide students with rich opportunities for learning. This activity supports young learners in developing their number sense by counting up the school days on a class 100...
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Worksheet
Curated OER

Comparisons

For Students 1st - 2nd
Explore number value with learners through playing cards. They examine sets of three cards, adding up the value and comparing it to another set of three. Learners write in which is greater than or is less than to show number value...
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Assessment
EngageNY

Grade 5 Math Module 1: End-of-Module Assessment

For Students 5th Standards
The last installment of the 18-part Grade 5 Math Module 1 is an end-of-module assessment. Scholars answer questions that require explaining the connection between powers of 10 and place value, rewriting decimals in different forms,...
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Worksheet
Curated OER

Add Decimals to the Hundredths Place Value

For Students 4th - 5th
In this decimal addition worksheet, students find the sums to 36 horizontal addition problems that include numbers with decimals to the hundredths place value.
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PPT
Curated OER

Addition and Subtraction up to 100

For Teachers 4th - 5th
After reviewing double-digit addition and subtraction up to and from 100, learners are introduced to addition and subtraction up to and from 10,000. A grid is used along side number decomposition to help them solve a word problem...
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Worksheet
Curated OER

Multiplying by 10

For Students 2nd - 4th
Multiplying by 10 is simple, but do your scholars know the trick? They look at four examples; if you haven't learned this yet, see if they notice a pattern in these answers. They multiply 70 numbers by 10. Most are two-digit, but a few...
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PPT
Curated OER

Shop till You Drop! Working with Money

For Teachers 3rd - 4th
Paper and coin currency are shown and reviewed, and then used to apply consumer math skills. Learners are given two examples of how they should line up decimal points and place values when adding or subtracting money. They watch as the...
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Handout
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West Contra Costa Unified School District

Adding Numbers

For Students K - 6th Standards
Support math instruction at home with a helpful reference sheet designed for parents. Three pages cover the subject of addition with written details and labeled pictures. 
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Lesson Plan
Curated OER

Pipe Music With Decimals

For Teachers 7th - 8th
Students discuss strategies for solving problems with decimals. They find the sum of problems through recognizing place value and by practicing adding numbers both vertically and horizontally. They read and solve real life word...