Lesson 27-6 ALGEBRA Addition and Subtraction Patterns
Use a pattern to add or subtract.
4.
5.
6.
7.
Estimation
8.
About how many
are there?
Circle your estimate.
about 20 about 30
Your child used number patterns to add and subtract.
Activity: Ask your child: What is 3 + 5? Then ask: What is 13 + 5? Have your child tell you the number pattern.