Mental Addition and Subtraction of Tens Math Games

In this series of games, your students will learn to mentally find 10 more or 10 less than a given two-digit number without having to count. The Mental Addition and Subtraction of Tens learning objective — based on CCSS and state standards — delivers improved student engagement and academic performance in your classroom, as demonstrated by research. This learning objective directly references 1.NBT.C.5 as written in the common core national math standards.

Scroll down for a preview of this learning objective’s games and the concepts.

Concepts Covered

Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count.

A preview of each game in the learning objective is found below.

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