Draw lines to the numbers.

How many?

Show how many with 10-frames.

Write the numbers.

Draw more dots.

1. 11

   

2. 19

   

3. 15

   

Choose the matching expression.

How does the expression match the dots?

Fill in the blanks.

1. \(10 + 7 = \underline{\hspace{1.4 cm}}\)

2. \(\underline{\hspace{1.4 cm}} + \underline{\hspace{1.4 cm}} = 18\)

3. \(\underline{\hspace{1.4 cm}} + \underline{\hspace{1.4 cm}} = 15\)

What are some ways to show 16?

What is your favorite way?

Tell a partner.

1. Arrange 18 dots in a way that helps you see there are 18.

2. Arrange 18 dots in a way that makes it hard to see how many there are.

3. Why is one way easier to see how many dots there are?

Try again with other numbers up to 19.