Q:
# What is addition?

**Addition is the process of combining two or more quantities together.** It is a mathematical operation denoted by the symbol “+”, which is referred to as the plus sign. In verbal expressions, the terms “plus,” “sum,” “total,” “more than” and “increased by” are synonymous with addition.

For example, placing three marbles with four marbles yields a sum of seven marbles. This is written in mathematical notation as “3 + 4 = 7” and is read as “three plus four equals seven."

Addition can also signify the joining of physical and abstract quantities, such as negative numbers, irrational numbers, variables, fractions, vectors, functions and others.

Learn more about K-12 Curriculum-
Q:
## What skills do common core math books teach?

A: At the Kindergarten level, the Common Core teaches skills related to counting, addition, subtraction and the identification of shapes. As students advance ... Full Answer >Filed Under: -
Q:
## What are some printable materials on TouchMath?

A: TouchMath's free downloadable and printable educational materials include sample activity sheets for preschool to upper grades, in addition to computation ... Full Answer >Filed Under: -
Q:
## What are some games that teach elementary school math concepts?

A: Some games to teach elementary school math concepts include multiplication bingo and dice games to teach addition and probability. These games are designed... Full Answer >Filed Under: -
Q:
## What does the Harcourt Math Grade 4 book cover?

A: The Harcourt Math Grade 4 book covers a large range of mathematical concepts and processes, including place value and comparisons, ordering numbers, additi... Full Answer >Filed Under: