Write a story problem using decade numbers.

Write the equation.

Solve the problem and explain your thinking.

Example:

1. I ate 44 grapes. I ate 20 more grapes. How many grapes did I eat?

2. 44 + 20 =

3. 4 tens plus 2 tens equals 6 tens. 6 tens plus 4 ones is 64. I ate 64 grapes.

Write the equation.

Solve the problem and explain your thinking.

Example:

1. I ate 44 grapes. I ate 20 more grapes. How many grapes did I eat?

2. 44 + 20 =

3. 4 tens plus 2 tens equals 6 tens. 6 tens plus 4 ones is 64. I ate 64 grapes.