Doubles addition facts with MONSTERS, ROBOTS AND DINOSAURS! This interesting visual resource includes fun and engaging worksheets to practice mental math strategies and promote basic math facts fluency. Color by number, with visual cues/ instructions variations, so you can revise "like this" and then "like that"! It is vital to build a strong foundation of doubles knowledge for basic number sense, subitizing and adding larger quantities and later on subtracting. Mastering their doubles facts w