When doing decimal addition always make sure to keep the numbers aligned by the decimal point so you don’t get confused. If the if there aren’t numbers in every column you, can add a placeholder 0 to keep it in line. Start by adding the first numbers on the right side. Then, always remember to move the decimal point down. Then add the next numbers going from right to left. If any number is higher than 9 then add the first number from the answer to the next number in the sequence, adding it normally.
I found this task interesting because I learnt how to do Decimal Division.