Lesson Plan
NTTI

I'll Halve S'more Please!

For Teachers 3rd - 5th Standards
There is a lot to learn about fractions, and this is a fun way to do it! Individuals participate in a Cyberchase activity to describe a fraction in terms of sharing parts of a whole. They determine the meaning of the parts of a fraction,...
Worksheet
Curated OER

Addition and Subtraction Problems: numbers to 20

For Students 2nd - 4th
You'll never be out of subtraction worksheets again. Here are 11 different sheets that require learners to add or subtract to find sums or differences up to or less than 20. Perhaps these can be used at home, at a work station, or to...
Worksheet
Curated OER

Problems Using Time

For Students 3rd - 4th
What time will it be in thirty minutes? Scholars use three digital clocks to answer nine questions which require they add and subtract minutes from a given time. Learners record what time it will be in a specific number of minutes or...
Worksheet
Curated OER

Weighty Sums and Differences

For Students 3rd
In this numbers with weight worksheet, 3rd graders add and subtract different weights to 8 barbells in order to make the weight balanced on both ends of each barbell.
Worksheet
Curated OER

Add or Subtract: Practice

For Students 2nd - 4th
For this addition and subtraction practice worksheet, students solve 28 mixed problems, answers are included on second page. Problems are a mix of addition and subtraction using 2 and 3 numbers.
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...
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...
Worksheet
Houghton Mifflin Harcourt

Mental Math: Subtract Tens - Homework 12.1

For Students 1st - 3rd Standards
Now that your class can add by 10s they can start subtracting by 10s. This clear, learner-friendly worksheet provides a good example (10-rods are pictured) and 7 problems to solve. Relates groups of tens to single-digit numbers, which...
Instructional Video5:56
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Math Antics

Working with Parts

For Students 3rd - 6th Standards
Get a clearer picture of working with fractions. While continuing to work with fractions as parts, the video shows how to use drawing to compare and add fractions. Worksheets then provide opportunities for pupils to practice comparing,...
Worksheet
Curated OER

Three Digit Addition and Subtraction (E)

For Students 3rd - 4th
In this three digit addition and subtraction instructional activity, students add and subtract three digit numbers. Students complete 49 problems where they add and subtract three digit numbers.
Worksheet
Math Mammoth

Add & Subtract Whole Hundreds 1

For Students 3rd
In this mathematics worksheet, 3rd graders compare the problem 2700 plus 200 to the problem 27 plus 2 and explain their reasoning. Then they notice the patterns for each of the problems and continue them.
Worksheet
Curated OER

Three-Digit Addition and Subtraction (Q)

For Students 3rd - 5th
In this three digit addition and subtraction activity, learners add and subtract three digit numbers. Students complete 49 addition and subtraction problems where they are to focus on 3 digit numbers.
Worksheet
Curated OER

Three-Digit Addition and Subtraction (P)

For Students 3rd - 4th
In this three digit addition and subtraction worksheet, students add and subtract three digit numbers. Students complete 49 addition and subtraction problems where they focus on three digit numbers.
Worksheet
Curated OER

Two Digit Addition and Subtraction (T)

For Students 2nd - 3rd
In this two digit addition and subtraction worksheet, students add and subtract two digit numbers. Students complete 49 two digit addition and subtraction problems to find the sum.
Lesson Plan
Curated OER

Adding and Subtracting Money

For Teachers 2nd - 3rd
In this math worksheet, students solve problems involving money. The first problem has four questions that guide the student through the problem solving process. The final four problems are computation problems involving money, but are...
Worksheet
Curated OER

Visual Sum and Difference Word Problems - Matching Worksheet

For Students 3rd
Third grade mathematicians match the correct answer to eight word problems that ask them to add and subtract three-digit numbers. Beware the typos and the complex wording of the problems.
Worksheet
Curated OER

Decimal Addition and Subtraction

For Students 3rd - 5th
In this decimal addition and subtraction practice worksheet, students use their problem solving skills to solve 24 problems that require them to add and subtract decimals with up to 3 decimal places.
Worksheet
Curated OER

Decimal Addition and Subtraction 2

For Students 3rd - 5th
For this decimal addition and subtraction practice worksheet, students use their problem solving skills to solve 12 problems that require them to add and subtract decimals with up to 1 and 2 decimal places.
Handout
Del Mar College

Arithmetic of Fractions

For Students 3rd - 6th Standards
Never forget how to add, subtract, multiply, or divide fractions with a two-page document detailing each operation. 
Lesson Plan
Curated OER

Number Operations

For Teachers 3rd - 4th
Inject fun into your math review! Pupils review basic math operations with decimals as well as addition and subtraction with simple fractions. In this number operations lesson, students work in groups to create a game for the math skill...
Worksheet
DK Publishing

Money Word Problems #1

For Students 2nd - 4th Standards
Having money problems? How about 19 more? Scholars begin with 10 money-related word problems, some requiring they understand different coin values. They add and subtract for these, and although there are also opportunities for division...
Activity
Pedago Net

Math Games Using Dice and Cards to Promote Mental Strategies

For Teachers 3rd - 5th
Develop mental math skills using these fun partner games. Covering basic operations, each one offers differentiation options, extension ideas, and clear directions. Dice or cards is all you'll need to keep kids' attention as they...
Worksheet
Curated OER

Addition and Subtraction 3 Numbers Combination

For Students 3rd - 5th
In this addition and subtraction instructional activity, students solve 17 problems in which they add and subtract 3 number combinations. Click on the New Problem Set button at the bottom of the page to view a new instructional activity...
Worksheet
Curated OER

4-Digit Problem Solving: Add and Subtract

For Students 3rd - 5th
For this problem solving worksheet, students solve a total of 7 equations, drawing models and using algorithm. A reference web site for additional activities is given.

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