Subtraction
Find what remains or the difference between amounts, and check with addition.
Meaning
Subtraction finds what remains after taking away, or the difference between two amounts. Adding the result to the amount subtracted returns the starting amount.
Example
Practice for this concept
Scope and references
Topics
Meaning of a difference, taking away and comparing, regrouping, the relationship between addition and subtraction
Learning goal
Find what remains or the difference between amounts, and check with addition.
Helpful background
Revisit counting and comparing two amounts as needed.
Subtraction
These ordinary choice questions provide limited practice in this concept. They do not establish independent solution, full-concept performance, or mastery.