1 of 10  

This Operations & Algebraic Thinking (Subtraction) - Summer Theme (grade 1) Math Mats is perfect to practice operation and algebraic thinking skills. Your elementary grade students will love this Operations & Algebraic Thinking (Subtraction) - Summer Theme (grade 1) Math Mats. Eight colorful math mats and cards for practice in grouping numbers into tens and ones, and using place value to count, compare, add and subtract. Printable manipulatives are included or you can use real items. CCSS.Math.Content: 1.NBT.A.1, B.2-3, C.4-6