Curated OER
Lesson Design Protocol: Add and Subtract
Addition and subtraction are studied in this math instructional activity. Upper graders add and subtract whole numbers up to 1,000 with and without regrouping.
Curated OER
Long Division Methods
This resource provides learners with three different methods for solving long division problems. The same problem is used to show each of the methods, which include guess and check, repeated subtraction, and the classic method. This may...
Raytheon
Signed Numbers/Integers Worksheets
In this positive and negative numbers worksheet, students compute the values indicated using addition, subtraction, multiplication and division, with answer keys included.
Curated OER
Addition and Subtraction up to 100
After reviewing double-digit addition and subtraction up to and from 100, learners are introduced to addition and subtraction up to and from 10,000. A grid is used along side number decomposition to help them solve a word problem...
Curated OER
St. Patrick's Day Missing Digits (J)
For this St. Patrick's Day missing digits worksheet, pupils figure out the missing numbers in twenty-two addition, subtraction and multiplication equations.
Curated OER
Operations with Positive Fractions and Decimals
Explore the concept of fractions and decimals! In this fractions and decimals lesson, pupils use fraction tiles to express fractions. They play a fraction review basketball game where when a team gets a question correct they get to shoot...
Curated OER
Solving Word Problems with Fish
Send your class fishing...for the right answers! Small groups collaborate to create math word problems based on the fish in their classroom aquarium or on the aquarium itself. After all groups determine the answer for their ownproblem,...
Curated OER
Subtraction with Regrouping
Use this handy presentation to clear up any confusion related to subtraction with regrouping. Each slide provides concrete examples of what occurs when one subtracts with regrouping. A full explanation and additional example problems...
Curated OER
Arithmetic: Fractions and Percentages
Young mathematicians review the basic operations needed for addition and subtraction of fractions. They review the rules for addition and subtraction of fractions with the same denominator, how to change them if the denominators are...
Curated OER
Fantastic Fractions
Young math whizzes solve 20 various types of equations related to fractions. First, they state each portion shaded as a fraction in lowest terms. Then, they determine the missing numerator or denominator and determine the value of each...
Curated OER
Fractions Forever!
Middle schoolers identify proper, improper fractions, and mixed numbers. They reduce fractions to their lowest terms. They add and subtract fractions with different denominators, and multiply and divide fractions, as well as decimal...
Curated OER
Pumpkin Concentration: Doubles Subtraction
Looking for a festive way to practice doubles subtraction? This pumpkin concetration game requires minimal set-up and can be brought out anytime for fun practice. Consider laminating the printed template so they last longer. Partners...
Raytheon
Time Goes By!
In this time worksheet, learners complete problems about time including addition and subtraction, word problems, fill in the blanks, elapsed time, and more. Students complete 64 problems total.
Curated OER
Primary Understanding and Use of Place Value
Explore place value and regrouping with your class. They develop awareness of several ancient number systems and how they differ from the base ten system commonly used today. They play "Chip Trading" with partners to practice addition...
Curated OER
Two-Digit Subtraction With and Without Regrouping
Second graders subtract two-digit numbers. In this mathematics lesson, 2nd graders subtract both with and without regrouping. Students use manipulatives and place value mats to assist in problem solving.
Curated OER
Adding and Subtracting Fractions (B)
In this adding and subtracting fractions activity, students find the sums and differences of fractions with common denominators. Students solve 10 problems.
Curated OER
Adding and Subtracting Fractions (With Unlike Denominators)
In this math worksheet, students subtract and add fractions with unlike denominators. Students solve the problem in steps. They are given examples of how to solve the problems.
Curated OER
Subtract Fractions
For this subtracting and comparing fractions word problem worksheet, students use two recipes to solve and explain the differences. Students solve six word problems.
Curated OER
Amusement Park Basic Word Problems
An interesting set of addition and subtraction word problems awaits your eager learners. This learning exercise includes 4 amusement park themes problems to solve.
Curated OER
Yummy Gummy Subtraction
Here is a quick 15 minute lesson intended to introduce subtraction. Learners count and subtract gummy bears to complete 5 problems. The lessons suggest that the gummy bears can be saved and used the next day, but gummy bears get gross...
Math Salamanders Ltd.
Subtraction - Up to 20, Sheet 3
In this finding the differences worksheet, students subtract one-digit and two-digit from numbers to twenty. Students solve 40 problems.
Curated OER
Mixed Addition and Subtraction Word Problems 2, Version 4
In this finding the sum and difference word problem worksheet, 2nd graders add or subtract to problem solve. Students solve 5 problems.
Curated OER
Missing Number
First graders examine how to use a symbol and shape variable to represent a missing value in a mathematical equation. They listen to the book "Fish Eyes" and "One Less Fish," and observe the teacher write an equation represented for each...
Curated OER
Beginning Subtraction #2
For this beginning subtraction worksheet, students observe models of subtraction problems to assist them in finding the difference. Afterward, they fill in the blank to subtraction problems. There are 21 subtraction equations on the...