Price: 300 points or $3 USD
Subjects: math,mathElementary,operationsAndAlgebraicThinking,additionAndSubtraction
Grades: 1,2,3
Description: This set of 20 interactive cards helps students strengthen their mental math skills while practicing three-digit addition using a step-by-step strategy. Students follow the arrows on a number line, first adding the hundreds, then the tens, and lastly the ones to find the sum. Each card features a fill-in-the-blank format that encourages students to think flexibly and apply their understanding of place value as they solve.