This lesson demonstrates how to use the correct format to find the value of a variable in an addition problem. It is 4 of 17 in the series titled "Solving Addition Equations."

This lesson demonstrates how to use the correct format to find the value of a variable in an addition problem. It is 8 of 17 in the series titled "Solving Addition Equations."

This lesson demonstrates how to use the correct format to find the value of a variable in an addition problem. It is 9 of 17 in the series titled "Solving Addition Equations."

This lesson demonstrates how to use the correct format to find the value of a variable in an addition problem. It is 1 of 17 in the series titled "Solving Addition Equations."

This lesson demonstrates how to use the correct format to find the value of a variable in an addition problem. It is 17 of 17 in the series titled "Solving Addition Equations."

This lesson demonstrates how to use the correct format to find the value of a variable in an addition problem. It is 12 of 17 in the series titled "Solving Addition Equations."

This lesson demonstrates how to use the correct format to find the value of a variable in an addition problem. It is 3 of 17 in the series titled "Solving Addition Equations."

This lesson demonstrates how to use the correct format to find the value of a variable in an addition problem. It is 7 of 17 in the series titled "Solving Addition Equations."

This lesson demonstrates how to use the correct format to find the value of a variable in an addition problem. It is 14 of 17 in the series titled "Solving Addition Equations."