Mental Math Task Cards – Addition and Subtraction (Grades 2–4) Boost your students' number sense and confidence with this engaging set of 40 Mental Math Task Cards focusing on addition and subtraction! Designed for 2nd, 3rd, and 4th grade, these cards help learners solve math problems quickly and accurately without using paper or pencil. This resource includes: ✔️ 20 addition task cards ✔️ 20 subtraction task cards ✔️B & W and color task cards ✔️ Mental math strategies (making tens, doubles, fri