# Two by Two

Your child knows how to add equal groups to find a sum. It is faster, though, to multiply equal groups to find a product.

## What You Need:

Help with Opening PDF Files

## What You and Your Child Will Do:

1. Display one pair of earrings on the table (or point to the pair of earrings on the first character on the worksheet). Make sure your child understands that two things make up one pair.
2. Put two more pairs of earrings on the table. Have the child show these by drawing a pair on each of the next two characters on the worksheet.
3. Ask these questions twice each—first for the three pairs of earrings on the table and then for the earrings on the three characters.
• “How many earrings are in each pair?” (2)
• “How many pairs are now on the table/on the worksheet?” (3)
4. Put the last two pairs of earrings on the table. Have your child draw a pair on each of the last two characters.
5. Repeat the questions in Step 3 for the five pairs of earrings—first those on the table and then those on the worksheet.
6. Your child knows that there are two ways to find the total number of earrings, by adding and by multiplying. Offer help in completing the addition and multiplication sentences at the bottom of the worksheet to find the total number of earrings in 1 to 5 pairs.