Curated OER
Unknown Numbers in Sums and Differences
Beginners to addition and subtraction will have fun with these three word problems, which have accompanying visuals. They complete one problem with a missing difference, one with a missing sum, and a third with a missing subtrahend....
Curated OER
Column Addition Rules
Expanded column addition is when a child breaks down each place value into its component numbers then adds all the sums together. Present the rules of expanded addition to help learners understand what it actually means to add multiple...
Curated OER
Calculator Trick 7
Kids love calculator tricks. They can add, multiply, and divide using their basic calculator to build number sense and have fun at the same time. One trick and a full rational as to how it works makes a great morning warm up.
Curated OER
Positive-Negative Charge Model For Integers
Use two different colors of bingo chips to represent positive and negative charges. Add and subtract them in a clear glass beaker to demonstrate how to add and subtract integers. This visual, along with a number line, will really help...
Curated OER
Unknown Numbers in Sums and Differences - Step-by-Step Lesson
First grade mathematicians will love to monkey around with an illustrated word problem involving missing bananas. They must decide how many bananas the monkey ate by counting the remaining bananas and by counting the number Lee had and...
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Add and Subtract Equations
One of these addition number sentences is incorrect: which one is it? Beginning mathematicians examine two simple equations, circling the one that is correct. An explanation on the bottom walks them through the processing, including...
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Two-Digit Addition
In need of a few good problems for the class to solve every morning? Each of the eight slides contain six double-digit addition problems which would be perfect as a morning math warm-up, skills and drills practice, or to be completed as...
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Easy Addition
Learnes practice an alternate way of carrying when doing addition. In this addition lesson, everyone applies an alternate algorithm when they need to carry when adding. They work from left to right instead of starting in the ones place....
Math Salamanders Ltd.
Column Addition—4 Digits Sheet 5
Learners write out and solve 12 horizontal four-digit addition problems.
Curated OER
Column Addition: Homework
Puils solve 15 column addition problems and one word problem. Houghton Mifflin text is referenced.
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Three Number Column Addition
Young math whizzes determine the s utilize the make ten strategy on several of the problems. They come up with sum of twenty addition problems involving three addends.
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Addition of Four Numbers (100 Problems)
Learnes solve 100 problems in which 4 four-digit numbers are added with regrouping. The problems are very closely spaced in small print.
Math Salamanders Ltd.
Column Addition - 4 Digits Sheet 2
Elementary schoolers add four-digit numbers together with regrouping. Students complete 15 column addition problems.
Curated OER
Addition of Four Numbers (49 Problems)
Pupils solve 49 problems in which four numbers are added with carrying. These are 2, 3, or 4 digit numbers in column addition.
Math Salamanders Ltd.
Column Addition - 5 Digits Sheet 1
Here is a column addition with a five-digit activity, in which learners add the five-digit numbers while carrying and keeping the columns aligned.
Curated OER
Fun Math: Add 2 Five-Digit Numbers
Learners complete a total of 12 problems; all problems add 2 five-digit numbers. Must open page from source to view graphics.
Math Salamanders Ltd.
Column Subtraction - Money 3-digits Sheet 1
Elementary schoolers subtract 3-digit numbers representing money from each other. They complete 20 subtraction problems with decimals and regrouping.
Curated OER
Unknown Numbers in Sums and Differences
Your new mathematicians may think word problems sound scary, but this introductory set of scenarios will leave them feeling accomplished in their addition and subtraction skills! Learners read seven word problems, each requiring them to...
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Area Applet
Elementary math classes calculate the area of a shape and explain the correlation between the size of the perimeter and the areas that can be contained within that perimeter. They also explain the effect the shape of the perimeter has on...
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Shop till You Drop! Working with Money
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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Addition Practice
Give your mathematicians a leg up on simple addition using this activity with visual aids. Similar to counting cubes, each single-digit addend is accompanied by a corresponding number of colored squares. The two colors are joined where...
Curated OER
Addition Practice
Can your young mathematicians find any sum of two numbers? Challenge them with three! This addition practice sheet includes two pages of equations, all of which have learners finding the sum of three 3-digit numbers. Sums are all below...
Curated OER
Adding and Subtracting Integers
Middle schoolers use discs in order to add and subtract integers. There are manipulatives present so kinesthetic learners can access the curriculum. They also review the concept of the opposite of positive and negative numbers.
Curated OER
Simplifying Expressions (Addition and Subtraction)
Seventh graders simplify algebraic expressions using addition and subtraction to combine like items and solve for the variable. They work with inverse operations to solve equations with guided practice. Everyone completes various...