Before the visit, ask the dentist what procedures will be performed so there are no surprises. Plan a course of action to manage your child's reaction to the visit. Some children may be non-cooperative. Talk to your child about what to expect and build excitement as well as understanding about the upcoming visit.
To retract is to withdraw something you said or did. When you made a statement and then realized you spoke in error and take back what you said, this is an example of a situation where you retract your statement.
Vertical subtraction is a method of subtracting where you place the numbers vertically and line up the numbers with the same place values in the same columns. This allows you to subtract the numbers in each place value separately to come up with the answer.