Pre-Kindergarten Mathematics
Unit 6
Addition and Subtraction

Printable Parent Letter

 

Students need to:

  • Explore the concept of addition by using part-part-whole story mats (add to five, add to ten).
  • Explore addition and subtraction with objects, fingers, mental images, drawings, sounds (i.e. claps), acting out situations, or verbal explanations.
  • Model story problems involving the joining together of two sets and then describe how many (add to five, add to ten).
  • Decompose numbers up to 10 into pairs in order to find the missing part within a whole quantity (part-part-whole mat) (subtract from ten).
  • Model story problems involving the separation of a quantity from a larger quantity and then tell how many (subtract from five, subtract from ten).
     

Carroll County Public Schools Video Support

 

Ways Parents Can Help

  • Practice adding by acting out story problems that involve joining two groups of objects using things around the house.
    (i.e a group of 3 red grapes and a group of 3 green grapes – when we put them together, how many grapes do we have in all?)
  • Practice subtracting by acting out story problems that involve the separation of a certain number of objects from a larger quantity of those objects by using things around the house.
    (i.e I have a group of 8 red grapes and I take 3 away. How many grapes do I have now?)
  • Books to Read:
    -Addition
    -Subtraction
    -Domino Addition

Some Support Sites

Math Word Problems - Apple app

10 Frame Fill - Apple app

Math Slide - Apple app

 

Key Vocabulary to Know

Fewer than

Greater than

Join

Less

Less than

Missing part

Add

Addition

Altogether

As many as

Compare

Equal

Plus

Put together

Same

Separate

Subtract

Subtraction

Take apart

More

More than

Number path

One less

One more

Part-part-whole