missing addend, addition, subtraction, first grade, math, distance learning, boom learning, unicorn.What's this?2 decks of 20 Boom cards in which students must:1. Find the missing addend2. Write the missing term in addition or subtraction in the first set and press the correct answer in the second set.This bundle include :Missing addend 0-20 BOOM CARDS write the answerMissing addend 0-20 BOOM CARDS press the correct answerDescriptionIt is a self-correcting activity with which the child receives