by Frick and Frack's Teaching Shack

Price: 275 points or $2.75 USD

Subjects: math

Grades: 1

Description: CCSS.MATH.CONTENT.1.OA.D.8 Determine the unknown whole number in an addition or subtraction equation relating to three whole numbers. This deck of 25 cards gives your students practice in identifying the missing number in an equation.