In this lesson, students will practice explaining the process of subtracting numbers up to 1,000 using base-ten blocks and peer feedback. Use this lesson on its own or as support to the lesson Fluently Subtracting within 1,000.
Students will be able to solve subtraction problems within 1,000.
Students will be able to explain subtraction with regrouping using base-ten blocks and peer interaction as support.
Ask students and turn to a partner and discuss the term subtract. Ask them to think of how they would explain the concept of subtraction to someone that does not know the meaning. Ask them to think of keywords or phrases that relate to subtraction (e.g., "take away," "difference," "how many are left").
Have students share their responses with a whole group and document their background knowledge on a piece of chart paper. Leave the chart paper on display for the rest of the lesson.