Find the value of each expression mentally.

Find the value of .
Show your thinking using drawings, numbers, or words.

Round 1:

Grab a handful of towers of ten and a handful of single cubes.

I have ______________ cubes. My partner has ______________ cubes.

How many cubes do you and your partner have altogether?
Show your thinking using drawings, numbers, or words.

Round 2:

I have ______________ cubes. My partner has ______________ cubes.

How many cubes do you and your partner have altogether?
Show your thinking using drawings, numbers, or words.

Round 3:

I have ______________ cubes. My partner has ______________ cubes.

How many cubes do you and your partner have altogether?
Show your thinking using drawings, numbers, or words.

Round 4:

I have ______________ cubes. My partner has ______________ cubes.

How many cubes do you and your partner have altogether?
Show your thinking using drawings, numbers, or words.