Dragonfly, the sixth basic addition/subtraction skill, introduces the concept of a carrying complements across multiple digits of a number. Students will be processing larger numbers working from the most significant digit to the least, i.e. left to right. Students completing the Basic Skill Training program will have developed the skill to confidently handle all addition and subtraction problems. Moving on to Advanced Level Training students will learn multiplication, division, decimals, and negative numbers developing significant speed and accuracy.