This week, our class will finish our unit “Add Numbers within 1,000.” Then we will take the Chapter 9, “Add Numbers within 1,000” post-test and take the Chapter 10, “Subtract Numbers within 1,000" pre-test.
In this chapter, your child will learn to subtract numbers within 1,000. Students will use various strategies such as place value, open number lines, and compensation to subtract three-digit numbers. They will also identify when they need to regroup to subtract numbers. Your child will also use addition to check their subtraction work. Some review words and phrases used in this chapter are: difference, compensation, open number line, regroup, and sum.
We will begin this chapter with the following learning targets:
- Use mental math to subtract 10 and subtract 100.
- Use an open number line to subtract hundreds and tens.
Please continue to help your child memorize their single-digit addition facts (for example, 6+6, 8+9, etc.). This is a critical skill that is needed for mastery by the end of 2nd grade. If you would like your child to practice their facts at home, XtraMath is an easy way to do so.