Year 2 – Palm Class addition superstars! Posted on 4 March 2016 by A maguire We have been solving addition number problems and finding different ways to add two digit numbers. Which method do you prefer and why? 87 + 9 = ? 87 + 10 = ? 87 + 74 = ? Which method will you choose? How will you explain your calculation? Is there another way to work it out?