Unlock harder levels by getting an average of 80% or higher.
Earn up to 5 stars for each level
The more questions you answer correctly, the more stars you'll unlock!
Each game has 10 questions.
Green box means correct.
Yellow box means incorrect.
Unlock harder levels by getting an average of 80% or higher.
Earn up to 5 stars for each level
The more questions you answer correctly, the more stars you'll unlock!
Each game has 10 questions.
Green box means correct.
Yellow box means incorrect.
Need some help or instruction on how to do this skill?
Want a paper copy? Print a generated PDF for this skill.
Share MathGames with your students, and track their progress.
See how you scored compared to other students from around the world.
Learn Math Together.
Grade 3 - Number and Operations in Base Ten
Standard 3.NBT.A.2 - Simplify both sides of the equation. Fill in the missing number with operands up to 100 to make the equation true.
Included Skills:
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
If you notice any problems, please let us know.