Subtracting Tens and Hundreds with Place Value Blocks

Khan Academy

This educational video provides a clear, visual demonstration of subtracting 10 and 100 from a three-digit number using place value blocks. The narrator begins by representing the number 324 using hundreds grids, tens bars, and ones cubes, establishing a strong connection between the abstract digits and concrete quantities. The video first demonstrates how to subtract 10 from 324, showing both the standard vertical algorithm and the visual removal of a tens block, resulting in 314.