Represent subtraction with and without the decomposition when there is a three-digit minuend

In this lesson, students continue to deepen their understanding of subtraction by relating their drawings to the subtraction algorithm working with the chip model on their place-value chart. They decompose a ten and relate it to vertical form. Students subtract a two-digit subtrahend from a three-digit minuend, for example 164 - 36. This provides practice working with and drawing three-digit numbers without the complexity of decomposing a hundred.