Worksheet
Curated OER

Number Collection

For Students 4th
In this problem solving worksheet, 4th graders read 5 number questions and solve each one by utilizing 15 triple-digit numbers found in a circle. Students interact with odd and even whole numbers.
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.
Worksheet
Curated OER

Add With No Regrouping

For Students 1st - 2nd Standards
For this finding the sums worksheet, students add one digit-numbers plus two-digit numbers with no regrouping. Students solve 30 problems.
Worksheet
Curated OER

Mental Math Skills

For Students 2nd - 3rd
In this mental math worksheet, learners use a number line to count backwards and forwards, add doubles, add and subtract one, and add one-digit numbers. Students solve thirty problems.
Lesson Plan
Curated OER

Codebreaker Math

For Teachers 2nd - 3rd
Young scholars solve addition and subtraction problems and decipher and write messages using a code. They read and discuss an informational fact sheet about the Navajo code talkers from World War II, and decode and re-code messages...
Worksheet
Curated OER

Write the Equations

For Students 1st - 2nd
In this writing equations to problem solve worksheet, learners read the addition and subtraction problems, write the one-digit and two-digit equations, and solve without regrouping. Students solve 15 problems.
Worksheet
Curated OER

Binary Math Circuits

For Students 11th - Higher Ed
In this Algebra II/Pre-calculus worksheet, students analyze and build digital circuits.  The six page worksheet contains eleven problems.  Answers not included. 
Lesson Plan
Curated OER

Mystery Math

For Teachers 6th - 8th
Here is an interesting "trick" your young mathematicians can perform. They are taught how to find any number's "digital root," by following a set of detailed instructions. The process works for any number, and is the type of math puzzle...
Lesson Plan
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Curated OER

Food Pyramid Power: Looking Back and Moving Forward

For Teachers Pre-K - 2nd
Students show their knowledge of properties of objects as it pertains to sorting and creating patterns. In this food pyramid power instructional activity, students show their ability to use whole numbers in different representations by...
Lesson Plan
Curated OER

The 500 Problem

For Teachers 3rd - 6th
Young scholars explain face, place and total value of numbers as well as solve three-digit subtraction problems. Before trying answer the problem Students must be able to examine that the same digit is used to represent different amounts.
Worksheet
Curated OER

Addition and Subtraction, Multiplication and Division Review

For Students 3rd - 4th
Students must use their mathematical reasoning skills in order to make four math statements true by filling in the boxes with the correct digits. Addition, subtraction, multiplication, and division problems appear.
Worksheet
Curated OER

Differences in amounts

For Students 5th - 10th
In this differences in amounts worksheet, students solve word problems where they figure out differences of amounts of two and three digit numbers. Students complete 10 multiple choice questions.
Worksheet
Curated OER

Subtracting Pictures of Stars

For Students K
In this subtracting pictures of stars worksheet, students look at the set of stars and write the answer to the simple subtraction problem.
Interactive
Curated OER

My Test Book

For Students 3rd - 4th
In this online interactive math skills worksheet, students solve 10 multiple choice math problems regarding 3-digit addition and subtraction. Students may submit their answers to be scored.
Worksheet
Curated OER

Problem-Solving Decision: Explain Your Answer - Reteach

For Students 3rd
In this problem solving activity, 3rd graders solve 3 word problems in which they add or subtract with three digit numbers. They write an explanation of how they solved the problem.
Lesson Plan
Curated OER

Pattern Puzzles

For Teachers 1st - 2nd
A short video introduces place value in addition and subtraction. As a class, your students identify all even numbers up to one hundred and explain the pattern. They use addition strategies to fill in the missing numbers on the number grid.
Lesson Plan
NTTI

Putting Together Ten

For Teachers 1st - 2nd Standards
Groups explore sets of 10 items in two varieties (i.e. 3 white buttons and 7 black ones, or 5 bears and 5 bunnies). They brainstorm about their objects, write math sentences to represent what they have, and report their discoveries...
Worksheet
Curated OER

Math in English Skills III Exercise Book: Understanding Fractions

For Students 1st - 6th
Fractions can be tricky, and there is no better way to tackle tricky topics than with a visual representation. Intended for learners in grades two and three, this set of printable worksheets provides a variety of fractions represented in...
Worksheet
Math Salamanders Ltd.

Adding 1s, 10s, 100s, and 1000s

For Students 3rd - 4th Standards
In this addition activity, students complete a 13-row chart. They start with three or four-digit numbers and add 1, 10, 100, or 1000 to each number to fill in the chart. The last four questions require subtraction because the initial...
Lesson Plan
Curated OER

Subtracting with Regrouping

For Teachers 2nd
Second graders explore math functions by completing a worksheet in class. In this subtraction lesson, 2nd graders identify the techniques used to assist in subtracting multi-digit numbers. Students complete a subtraction worksheet and...
Worksheet
Curated OER

What Do You Think?

For Students 2nd - 3rd
In this estimating sums and differences activity, students solve 6 problems in which the answer to a 3 digit addition or subtraction problem is estimated. Students then solve the problem for an exact answer. There will be carrying and...
Worksheet
Curated OER

Fun Math 63

For Students 2nd - 3rd
In this finding the difference worksheet, students subtract three-digits from three-digit numbers with regrouping on a page with fun clip art next to each problem. Students solve 15 problems.
Worksheet
Curated OER

Fun Math 64

For Students 2nd - 3rd
In this finding the difference worksheet, students subtract three-digits from three-digit numbers with regrouping on a page with fun clip art next to each problem. Students solve 15 problems.
Worksheet
Curated OER

Fun Math 65

For Students 2nd - 3rd
In this finding the difference worksheet, students subtract three-digits from three-digit numbers with regrouping on a page with fun clip art next to each problem. Students solve 15 problems.