Can you solve this equation using the opposite operation?

We are learning to understand how to solve algebra equations involving subtraction and addition.

I know I can do this when I explain how to solve an addition equation using the opposite operation.

Can you help my friends make the best choice?

WALT compare the total costs to make the best buying decision.


I know this when I calculate the total cost per shop in order to choose the best option.

Do you know how to use repeated addition to solve a math problem?

WALT: identify sets for a given problem.
Success criteria: I know this when I use repeated addition to solve a math problem correctly.