Mangahigh
Mangahigh: Number: Number Pairs Up to 100
Students explore the concept of number pairs by working through an online tutorial and then attempting a ten question quiz that increases in difficulty as questions are answered correctly.
Discovery Education
Discovery Education: Web Math: K 8 Math
This WebMath site shows how to add, subtract, multiply and divide through a step by step examples. The user simple selects the operation and types in two numbers, and the computer solves the problem through a step by step process. Also...
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Elementary Addition
This resource offers six brief arithmetic lessons: sums less than ten, sums of ten, and sums between ten and twenty, doubling, zero, and a set of general practice problems.
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: The Meaning of Subtraction, and Mental Calculation
This website explains and defines basic subtraction. There are practice problems at the very end of this lesson.
Khan Academy
Khan Academy: Add Within 20
Practice adding. All numbers in these problems are 20 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Adding Three Numbers
In this exercise, students practice addition and subtraction within 10. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Adding 1s or 10s (No Regrouping)
In this exercise, students practice adding 1s or 10s (no regrouping). Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Adding Two Digit Numbers (No Regrouping)
In this exercise, students practice adding two-digit numbers (no regrouping). Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Breaking Apart Two Digit Addition Problems
In this exercise, students practice breaking apart two-digit addition problems. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Regrouping When Adding One Digit Numbers
In this exercise, students practice regrouping when adding one-digit numbers. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Find Ten [Pdf]
Find two numbers that add together to make ten and record those problems.
Khan Academy
Khan Academy: Subtracting 1s or 10s (No Regrouping)
Practice solving problems like 67-5 and 67-50. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a tutorial video, or receive hints.
Khan Academy
Khan Academy: Find Missing Number (Add and Subtract Within 20)
Learn how to solve problems like "___ - 7 = 18" where you don't know one of the values in an addition or subtraction equation. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or...
Khan Academy
Khan Academy: Subtract Within 20
Practice subtracting. All numbers in these problems are 20 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a tutorial video, or receive hints.
Goodwill
Gcf Global: Addition and Subtraction
Learn the basics of addition and subtraction, then practice what you've learned using the interactives.
Illustrative Mathematics
Illustrative Mathematics: Building Toward Fluency
The purpose of this task is to promote certain addition strategies that will help students learn to fluently add and subtract within 20. Students will use a number line or magnetic cubes to solve addition problems. Students will be asked...
ICT Games
Ict Games: Funky Mummy
Funky Mummy is a mobile-friendly number facts game. Play this game to practice quick recall of addition, subtraction and multiplication facts.
CK-12 Foundation
Ck 12: Elem Math: Fluency in Subtraction Numbers Up to 20
[Free Registration/Login may be required to access all resource tools.] The video uses a model to demonstrate subtraction with two numbers that are less than 10.
Starfall
Starfall: Addition Sums to 10
An engaging interactive math activity where students practice adding two sets of objects with a sum less than or equal to ten.
Starfall
Starfall: Addition and Subtraction Strategies
This learning games focuses on addition and subtraction by filling in the missing number. At the end children can use the arrows on the computer to work a boy through a maze.
Better Lesson
Better Lesson: How Are They Different?
SWBAT order a set of numbers and quantities up to 12 and compare two quantities up to 10 to see which one is greater. The students will also demonstrate their knowledge of how the numbers in the counting sequence are related (that each...
Better Lesson
Better Lesson: How Many in Your Box?
SWBAT make a connection between number names and written numbers to the quantities they represent. They will also practice ordering numbers and quantities up to 12. Students will also document a solution to a problem
Better Lesson
Better Lesson: Put Together or Take Away?
First graders learn the basics of 1.OA.1 by mixing addition and subtraction word problems from day 1. The focus question is: Put together or take away?
Other
Nearpod: Adding & Subtracting: Properties of Addition
In this lesson on adding and subtracting, young scholars will learn to idenitfy and apply the commutative and associative properties of addition while utilizing their knowledge of fact families to correctly solve problems.