Worksheet
Curated OER

The Case of the Missing Numbers

For Students 1st - 3rd
In this finding the unknown numbers learning exercise, students help Detective Digit solve addition and subtraction problems, match the answers with letters, and find the name of the number thief. Students solve and match 16 problems.
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.
Worksheet
Curated OER

Divide by 2 homework 10.4

For Students 3rd - 4th
In this dividing by two worksheet, students review using repeated subtraction, making equal groups, and related multiplication facts to divide one-digit and two-digit numbers by 2. Students solve seventeen problems.
Worksheet
Curated OER

Guess My Number

For Students 2nd - 3rd
In this finding the number worksheet, learners 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.
Lesson Plan
Curated OER

The Good, The Bad, The Ugly

For Teachers 6th
Sixth graders examine the causes of the stock market crash of 1929.  In this integrated math/history unit on the stock market, 6th graders study, research, and read stocks, visit a local bank, and create a PowerPoint to show the...
Worksheet
Curated OER

Number Manipulation

For Students 8th - 9th
In this number manipulation worksheet, learners solve 4 different types of problems that include number manipulation. First, they use division, multiplication, addition, or subtraction to make each set of numbers into equations which...
Lesson Plan
Curated OER

The School Store

For Teachers 1st - 2nd
Students choose between the operations of addition or subtraction to solve a real life problem. In this addition and subtraction activity, students make a chart of items sold in the school store. Students then work in teams to apply...
Worksheet
Curated OER

Subtract 19

For Students 2nd - 3rd
For this subtracting 19 worksheet, students subtract 19 from different 2 digit numbers. Students complete 18 problems where they subtract 19.
Worksheet
Curated OER

How to Calculate Your Age by Chocolate

For Students 7th - 12th
In this math puzzle worksheet, students follow detailed directions to find their age. They begin with the number of times per week they eat chocolate. Their final answer tells how much chocolate they want or eat as well as their age.
Lesson Plan
2
2
Penn Museum

Egypt

For Teachers 4th - 8th Standards
From pharaohs and pyramids to the mummification process, this packet is a fantastic resource for studying ancient Egypt! Worksheets not only review key terms and practices that are foundational to ancient Egyptian culture, such as...
Worksheet
Curated OER

Subtraction In Two Digits

For Teachers 2nd - 3rd
In this math activity, students find the answers to the subtraction problems using two digits. The answers are found at the bottom of the page.
Worksheet
Curated OER

Subtraction Worksheet

For Teachers 1st - 3rd
For this math worksheet, students look for the answers to the 25 subtraction problems. The solutions are found at the bottom of the page.
Worksheet
Curated OER

Addition and Subtraction sums and differences

For Students 2nd - 5th
In this sums and differences worksheet, learners 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.
Worksheet
Curated OER

Easy Subtraction

For Students K - 1st
In this easy subtraction worksheet, students solve 3 picture and numeric problems of 1-digit numbers. A website reference is given for additional resources. 
Worksheet
Curated OER

Subtract by Finding Difference-Counting On

For Students 3rd - 4th
In this subtraction worksheet, students solve a total of 10 problems, first "counting on" to solve, then determining whether to partition or count on to complete additional problems.
Worksheet
Curated OER

Mental Arithmetic

For Students 2nd - 3rd
In this mental math learning exercise, students answer 2 sets of mental math questions about writing whole numbers, place value, counting back and on in tens and addition and subtraction.
Worksheet
Curated OER

Elimination Using Addition and Subtraction

For Students 10th - 12th
In this systems of equations worksheet, students use the elimination method to solve systems of equations. An example and explanation is given at the beginning of the worksheet. This one-page worksheet contains ten problems.
Lesson Plan
Pennsylvania Department of Education

Comparing Sets

For Teachers Pre-K - 2nd
Students count back with cubes to model subtraction problems. In this subtraction lesson plan, students compare sets of problems and record their results in a table.
Worksheet
Curated OER

Add or Subtract

For Students 1st - 2nd
In this addition and subtraction worksheet, learners solve addition and subtraction problems containing one digit numbers. Students complete 52 problems.
Worksheet
Curated OER

Add or Subtract

For Students 1st - 2nd
In this addition and subtraction worksheet, students complete addition and subtraction problems containing one digit numbers. Students complete 52 problems.
Worksheet
Curated OER

4-Digits: Pattern, Compare, Order

For Students 2nd - 4th
In this pattern, comparing and ordering worksheet, students complete a total of 10 multiple choice questions that use concepts of ordering, comparing and patterns.
Worksheet
Curated OER

Which Operation To Use?

For Students 2nd
In this basic addition and subtraction worksheet, 2nd graders will determine the correct operation to use. Students will study 8 problems and the given answer, deciding if the correct sign to use will represent addition or subtraction.
Worksheet
Curated OER

Solving addition equations

For Students 5th - 8th
For this addition equations worksheet, students solve equations with variables that have one and two digit numbers in them. Students complete 4 problems.
Worksheet
Curated OER

4-Digit Problem Solving: Add and Subtract

For Students 3rd - 5th
In 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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