Includes 40 task cards of addition problems, a recording sheet, and an answer key :) All addends only go up to 9,999 but the sum is greater than that in some problems. Addresses these common core standards: CCSS.3.NBT.A.2 Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction. CCSS.4.NBT.B.4 Fluently add and subtract multi-digit whole numbers using the standard algorithm. If yo