Curated OER
Add or Subtract Whole Numbers Up to 1000
Elementary schoolers solve practice problems on the board and are shown how to line up the numbers for addition. They solve various addition problems in small groups. Everyone continues the same process for solving subtraction problems.
Curated OER
Time to Trick-or-Treat!
Use number lines to help scholars add and subtract time as they solve five word problems. Each scenario gives a starting or ending time and several tasks that take specified amounts of time. Scholars mark the number line to determine...
Curated OER
Using Number lines in Addition and Subtraction
Adding and subtracting can be done by counting on or counting down a number line. This presentation provides a complete demonstration and examples of how one can use a number line to solve double-digit addition and subtraction problems....
Illustrative Mathematics
Discounted Books
Adolescents love to shop, especially when an item is discounted. Here, shoppers only have a set amount of money to spend. Will they be able to make a purchase with the discount and tax added in? Percent discounts can be calculated...
Curated OER
Real-life Problems, Working with Decimals
Put your learners' decimal skills to the test with these five word problems. With space for students to write their work, the word problems contain addition and multiplication problems with money and measurement units. Use this resource...
Curated OER
Subtraction Word Problems #1
Practice subtraction skills and word problem strategies with your second graders. After reviewing the example at the top of the page, learners solve 14 word problems involving subtraction. A great way to practice mental math!
Curated OER
Addition: Number Bonds to 10
You have the answer and a variable, but something is missing! The class fills in the missing addend in 23 practice problems that all add up to 10. This is a great way to build number sense, pattern recognition, and automaticity.
Curated OER
Add and Subtract within 20
Here is a more interesting way to practice addition and subtraction number sentences. Learners complete two sum boxes, adding across and down then totaling for a final sum. They do the same with subtraction in two more boxes. Finally,...
Curated OER
Add and Subtract Integers Worksheet
In this adding and subtracting integers worksheet, students review integer rules by completing 19 drill and practice questions. They work in pairs to compute the total left in a fictitious bank account after several withdrawals and...
Curated OER
Adding and Subtracting Like Mixed Numbers (1)
In this mathematics activity, students solve a number of problems by adding and subtracting similar mixed numbers. There are ten problems to solve on the sheet.
Curated OER
Add or Subtract (up to 50)
Do you add or subtract? It's up to your mathematicians as they fill in the symbol for 16 equations to make them true. The numbers in this section don't exceed 18. Next, learners answer six word problems by determining the missing addend...
Maths Blog
Adding/Subtracting Whole Numbers in Your Head
Exercise those mental math muscles! This worksheet contains 10 addition and 10 subtraction problems which require learners to compute sums or differences in their heads. A quick review at the top of the page provides a strategy based on...
University of Colorado
Solving a Mixed Up Problem
Begin the process of adding and subtracting spectra. Having a basic understanding of occultation events, pupils begin the pursuit to determine what a found atmosphere might contain. Learners work with two graphs and calculate what the...
Curated OER
Adding/Subtracting Integers
In this integer instructional activity, students find the sum and difference of positive and negative integers. Each equation contains two to three terms, with multiple operations. Thirty problems are provided, with an answer sheet.
Curated OER
Mental Maths
In this counting worksheet, students complete 22 fill in the blank problems where they are given a starting number and count by 1's, 2's, and 10's. Next. students answer 12 fill in the blank addition or subtraction problems where they...
Houghton Mifflin Harcourt
Intensive Math
Three chapters worth of integer, fraction, and decimal problems to give you every type of question your learners need to be a successful mathematician. Thankfully the work has been done for you and this is a huge resource full...
Illustrative Mathematics
Guess My Number
Make a game out of solving equations. This particular activity works well for pairs of learners. Follow the instructions to have player one pick a number and player two verbally give an equation. Participants need to make sense of a...
Pedago Net
Math Games Using Dice and Cards to Promote Mental Strategies
Develop mental math skills using these fun partner games. Covering basic operations, each one offers differentiation options, extension ideas, and clear directions. Dice or cards is all you'll need to keep kids' attention as they...
Curated OER
Number Line: Negative Numbers
In this graphing calculator worksheet for the TI-83 calculator, middle schoolers first observe a demonstration for calculating negative numbers. Next, students use their graphing calculator to answer 6 thoughtful T/F and short answer...
Curated OER
Math in English Skills I Exercise Book: Addition and Subtraction
Whether your pupils need extra help or they simply need to practice their basic computation skills, this packet will do the trick. It includes a written rationale, answer key, and over 10 pages of double-digit addition and subtraction...
Curated OER
Adding and Subtracting Integers
In this integers instructional activity, learners use the integer number line to solve the problems as they add and subtract positive and negative numbers. They find the answers to 10 questions.
Curated OER
Ten Sly Piranhas: A Counting Story in Reverse
Students solve related addition and subtraction problems. In this addition and subtraction lesson, students use the book Ten Sly Piranhas by William Wise as the source of word problems for students to solve.
Curated OER
Working With Negative Numbers: Adding and Subtracting with a Number Line
For this math worksheet, students practice addition and subtraction of positive and negative numbers using a number line to help. The 30 problems are written as questions in words.
Curated OER
How to Measure Time Worksheet
For this elapsed time worksheet, students read facts about time such as there are 60 seconds in 1 minute, and read tips for computing elapsed time both when going from am to pm, and within the morning or afternoon. They practice adding...