Curated OER
Missing Addends - Inverse Operations
In this math worksheet, student find the missing addend in 28 single and double digit addition problems and write the corresponding subtraction problem.
Curated OER
Guess My Number
In this finding the number worksheet, students read clues and solve one-digit addition and subtraction problems to write the numbers in the tens and ones places and discover the missing numbers. Students solve five problems.
Curated OER
Solve Story Problems: Sold! A Mathematics Adventure
Young mathematicians listen to the book Sold!: A Mathematics Adventure by Nathan Zimelman where they encounter ways to solve story problems. They then create and solve start unknown addition and subtraction equations. Resource builds in...
Curated OER
Addition - Sums to 9 (3 of 3)
Simple summation skills are the meat and potatoes of future arithmetic skills. Use this worksheet to provide practice for your first graders when adding single digits. Answers are provided by the click of a box at the top of the page,...
Curated OER
It All Adds Up- Math Square Puzzle
In this addition puzzle worksheet, learners solve a math square in which rows and columns are added to equal the number provided at the end of each row. Students insert the digits in the puzzle to make correct addition sentences.
Curated OER
Two Digit Addition
In this math worksheet, students practice working out problems with the operation of addition without the need for regrouping.
Primary Junction
Adding Tens
Build on your learners' confidence in quick addition as they discover strategies to add tens to two-digit numbers. After reviewing counting by 10's, they discuss tactics to add multiples of 10 to other numbers. They visualize how to...
Resources for Educators
Math & Science Connection
Whether you're using a collection of Dr. Seuss books to teach basic math skills like counting, adding, and subtracting, or exploring the different states of matter by melting a crayon with a hairdryer, a series of 11 fun activities...
EngageNY
Decimal Expansions of Fractions, Part 1
Is it possible to add infinitely long decimals? As pupils complete the examples in the ninth lesson of this 25-part series, they determine that adding these decimals cannot be done without error. Their task is then to determine the size...
Justin Holladay
5 Dice: Order of Operations Game
Sometimes the simplest ideas can be the most challenging to solve! In this app, you are given five numbers and a set of operators, and you need to create an expression that when evaluated using the order of operations simplifies as the...
Curated OER
Subtraction Shopping
Learners subtract two digit numbers. They check each other's answers for accuracy.
Curated OER
Number Sense
First graders practice rounding 4 digit numbers using place value concepts. In this estimating sums and differences instructional activity, 1st graders explore clustering, rounding, and front end estimation as methods for rounding decimals.
Curated OER
Add to Find the Greatest Total
For this addition worksheet, students solve 12 problems in which two digit numbers are added with carrying. Students ring the total that is the greatest in each row.
Curated OER
Sums
In this early childhood addition practice worksheet, learners use their problem solving skills to solve 10 problems that require them to add 1 digit numbers.
Curated OER
Valentine's Day Chocolates Mystery: Sums to 1998 (A)
This worksheet prompts students to add three digit to three digit numbers. They are challenged to find the number of chocolates in a candy box by counting the answers above 999.
Curated OER
Add 29, 39, 49 To Any 2-Digit Number
In this addition worksheet, students solve 18 problems in which the number 29, 39, or 49 is added to a two digit number. There are no hints or examples. Problems are in horizontal format for mental math.
Curated OER
Addition and Subtraction sums and differences
For this sums and differences worksheet, students are given a one digit number and they have to make up the addition or subtraction problem to make it equal to the number. Students complete 36 problems.
Curated OER
Regrouping Ten Ones for One Ten
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.
Curated OER
Adding 1s, 10s, 100s, and 1000s
In this addition activity, students complete a 13 row chart where they start with either 3 or 4 digit numbers and add 1, 10, 100, or 1000 to each number to fill in the chart. The last 4 questions require subtraction because the initial...
Curated OER
The Numbers Get Larger
Second graders examine how to use mental strategies for addition and subtraction. They look at part/whole strategies for multi-digit problems and define which one would be best used for a particular problem. They use tens frames to solve...
Curated OER
Identifying Place Value
Third graders complete math problems. In this place value lesson plan, 3rd graders solve problems that require them to write the place value of a number in expanded form and identify the place value and expanded form of three digit...
Curated OER
Investigation - Who is Right?
Third graders explore mathematics by solving problems in groups. In this math functions lesson plan, 3rd graders demonstrate their understanding of addition and subtraction by completing two digit math problems. Students define a list of...
Curated OER
Adding 1s, #2
In this addition practice activity, students practice their math skills as they solve 80 problems that require them to add 1 digit numbers to 1 digit numbers.
Curated OER
Adding on a Number Line
In this math worksheet, students learn to add one digit numbers by drawing "jumps" on a number line. Students solve 6 problems with a number line for each.