Price: 200 points or $2 USD

Subjects: nativeEnglish,mathElementary,math,countingAndCardinality,counting,additionAndSubtraction

Grades: 13,1

Description: On each card, students will complete the equation with the missing number to make a total of 20. They can use the picture of counters on the double ten frame and determine how many more they need to make a total of 20 either by counting the blank spaces or by dragging counters onto the ten frames if they need help. They type the missing number into the equation.