▶▶ What is this? ▶ ▶This is a FREE printable math worksheet "Crack the Code" focusing on easy 1 digit addition and subtraction. ▶An easy and fun refresher with 1 digit addition and subtraction, great for Grade 1 math / 1st Grade math or a quick refresher for your Grade 2 / 2nd Grade students. ▶Simple and fun graphics make this an eye catching worksheet. Print in color OR Black and white. ▶Simply download the file and print out as many times as you need. Keep the file for years to come! ❤ The