Learning Subtraction to 50 with Base-Ten Blocks

MatholiaChannel

This educational video provides a clear, step-by-step visual demonstration of how to subtract two-digit numbers up to 50 without regrouping (borrowing). Using a split-screen approach, the video pairs abstract vertical subtraction equations with concrete base-ten block representations. This dual method helps students bridge the gap between physical manipulatives and written mathematical procedures. The content focuses on the core concepts of place value, emphasizing the importance of aligning numbers in 'Tens' and 'Ones' columns. It explicitly teaches the standard algorithm rule of strictly subtracting the ones column first, followed by the tens column. Through three distinct examples (34-13, 48-25, and 36-25), the narrator reinforces procedural fluency while visually proving the math by crossing out corresponding blocks. For educators, this video is an excellent resource for introducing column subtraction or supporting students who struggle with abstract calculation. It can be used to model the use of physical manipulatives in the classroom or as a visual anchor during independent practice. The clear narration and uncluttered visuals make it particularly effective for direct instruction in early elementary mathematics.