Price: 150 points or $1.5 USD
Subjects: math
Grades: 13,1,2
Description: Included you will find 20 Boom flash cards for finding the missing number when adding. Random facts between 1-10 in the Drag and Drop format with 3 answer options (see preview to view). Check out my store for the other #1 What's missing Addition 1-10 purchase both for the complete set of facts for 1-10! CCSS.MATH.CONTENT.1.OA.D.8 Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = _ - 3, 6 + 6 = _.