Curated OER
Common Core State Standards 1st Grade Math
Here are the complete set of the math practice standards and the Common Core standards for first grade. They cover operations & algebraic thinking, operations in base 10, measurement and data, and geometry. Illustrated nicely with...
PHET
Make a Ten
Rate the resource as a perfect 10. Pupils use an interactive to help add and subtract numbers. They first explore how to express whole numbers using hundreds, tens, and ones, then explore how to add whole numbers by combining to make...
Curriculum Corner
“I Can” Common Core! 1st Grade Math
Any first grader can master the Common Core math standards with this checklist! With each standard rewritten as an affirmative I can statement, children are provide with clear goals to work toward throughout the school year.
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Scholastic
Adding and Subtracting Ten
Developing fluency with basic addition and subtraction is fundamental to the success of all young mathematicians. This four-day lesson series begins with learners using ten-frames and hundreds charts to recognize patterns when adding and...
California Academy of Science
The Emperor Penguin's Egg
Here is a game intended for use at home that could easily be adapted to the school environment. The class reads an informational story about emperor penguins and then they watch a clip from the film, March of the Penguins. They focus on...
Curated OER
Subtraction Practice, Part 2
For a quick subtraction drill, these 17 problems are a great addition to your math lesson. All problems use multiples of ten, ranging from 10 to 90. Use the activity as a timed quiz or more thorough review assignment.
Maths Blog
Understand Subtraction - Take Whole Tens
Use a number line to demonstrate subtracting by tens. Learners "hop" backwards down a tens number line to complete subtraction equations. Several different ways to express the operation are included.
Houghton Mifflin Harcourt
Mental Math: Subtract Tens - Homework 12.1
Now that your class can add by 10s they can start subtracting by 10s. This clear, learner-friendly learning exercise provides a good example (10-rods are pictured) and 7 problems to solve. Relates groups of tens to single-digit numbers,...
Math Salamanders Ltd.
Subtracting Tens Sheet 1
In this two-digit subtraction learning exercise, students solve 30 subtraction problems. Students must write the answer in the blank for each problem.
Worksheets Plus
Place Value Worksheets - What Number Am I?
Practice place value with this resource. The 12 questions consist of riddles. For example, "I have 4 tens and 2 ones. What number am I?" This is a creative approach to thinking about double-digit numbers. Answers are available so you can...
Curated OER
The Beet Goes On
Root vegetables inspire the series of activities included here. Class members participate in activities related to language arts, social studies, science, visual art, and math. At first, the long list might feel overwhelming; however,...
![Inside Mathematics: Peanuts and Ducks [Pdf] Lesson Plan](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Inside Mathematics: Peanuts and Ducks [Pdf] Lesson Plan")
University of Texas
Inside Mathematics: Peanuts and Ducks [Pdf]
This task challenges a student to demonstrate understanding of concepts involved in addition and subtraction. A student must be fluent with addition and subtraction within 100 and understand the relationship between addition and...
Better Lesson
Better Lesson: Adding and Subtracting Multiples of Ten
Students will apply the idea of adding or subtracting ten to a number by adding or subtracting multiple groups of ten from a number. Included is a detailed lesson plan, videos of the lesson in action, materials and worksheets, and center...
Common Core Sheets
Common Core Sheets: Addition and Subtraction
Create a worksheet to assess student knowledge of addition and subtraction.
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Add and Subtract Ten on a Number Line [Pdf]
Students will roll a die and follow the directions to explore adding and subtracting on a number line.
Scholastic
Scholastic: Study Jams! Math: Relate Adding, Subtracting
Watch a short video on the relationship between addition and subtraction then assess your knowledge with practice questions.
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Adding Tens to a 2 Digit Number [Pdf]
Students will flip two cards over and determine the sum. Base ten blocks could be used for additional help.
Mr. Martini's Classroom
Mr. Martini's Classroom: Kids' Adding Up to 7
Practice addition facts up to 7 in this interactive exercise.
Mr. Martini's Classroom
Mr. Martini's Classroom: Kids' Subtract Up to 9
Practice subtraction facts up to nine with this interactive exercise.
AAA Math
Aaa Math: Subtraction
This tutorial focuses on basic subtraction, subtraction facts, subtraction skills, subtraction of fractions and subtraction of positive and negative integers. Features include practice exercises and games.
Mangahigh
Mangahigh: Number: Number Partners Up to 20
Students explore the concept of number partners by working through an online tutorial and then attempting a ten question quiz that increases in difficulty as questions are answered correctly.
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.
Khan Academy
Khan Academy: Commutative Property of Multiplication
In this exercise, students practice multiplication using place value understanding. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Make 10
Practice adding numbers to make 10. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.