Fill in the blank boxes with the correct numbers. There are multiple columns, and each column has blue and red beads. Count the beads in each column and add them together to find the sum.

There are 10 blue beads. This number goes in the first blank box.

There are 10 red beads. This number goes in the second blank box.

The sum is 20, which goes in the third blank box.

The completed equation for the first column is:

Column 2:

There are 10 blue beads. This number goes in the first blank box.

There are 10 red beads. This number goes in the second blank box.

The sum is 20, which goes in the third blank box.

The completed equation for the second column is:

Column 3:

There are 10 blue beads. This number goes in the first blank box.

There are 10 red beads. This number goes in the second blank box.

The sum is 20, which goes in the third blank box.

The completed equation for the third column is:

Column 4:

There are 10 blue beads. This number goes in the first blank box.

There are 10 red beads. This number goes in the second blank box.

The sum is 20, which goes in the third blank box.

The completed equation for the fourth column is: