## Lesson: Adjusting the Quotient

Introducing the Concept

Your students will have divided by multiples of 10 and by one-digit divisors before. Draw on this background to help them divide by two-digit divisors. Students MUST know the basic multiplication and division facts. Knowing the division algorithm but using incorrect facts leads to incorrect answers and frustration for your students. Have your students use a multiplication fact table, as necessary. Knowing how to use compatible numbers to make an estimate of a quotient will help to relieve the frustration of knowing *how or where to start.*

**Materials:** a large model of the multiplication fact table, prepared 11-by-11 grids for students to make their own fact tables (see below).

**Preparation:** Construct a large multiplication fact table and post it where students can see it. Prepare grids, like the one shown above, for students' fact tables.

**Prerequisite Skills and Concepts:** Students should be familiar with the basic addition, subtraction, multiplication, and division facts. They should be able to divide by multiples of 10 and by one-digit divisors.

Write the following problem on the board.