CCSS.Math.Content.1.OA.B.4

Understand subtraction as an unknown-addend problem. For example, subtract 10 - 8 by finding the number that makes 10 when added to 8.

Understanding Subtraction with Unicorns
View Understanding Subtraction with Unicorns

Practice subtraction. Understand subtraction as an unknown-addend problem.

Home Spelling Words - Home Spelling Website

Play Spelling Games, Get Spelling Lists, Practice Spelling and Take Spelling Tests. Perfect for parents or homeschoolers.

Spelling Stars - School Spelling Website

Spelling Stars was made for teacher use. Save time by giving spelling tests online that are graded for you. Assign practice, games, pretests and tests by individual, group or class. Fully integrated with Google Classroom.

Math Pyramid Site Map

Use the sitemap to view a list of all our pages.

Privacy Policy

We take your privacy seriously please click to read more.

Social media

Interactive Math Games

Play math games online to improve math skills. Learning math using gamification is fun!

Practice Math

We make it easy for students to practice math, complete math homework or take math test online.

Take Math Tests Online

Students can take their math tests online. All tests are graded instantly and scores are displayed on screen. Reports are created after each exercise is completed.