Standards Map

Mathematics > Grade K > Number and Operations in Base Ten
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Mathematics | Grade : K

Domain - Number and Operations in Base Ten

Cluster - Work with numbers 11–19 to gain foundations for place value.

[K.NBT.A.1] - Compose and decompose numbers from 11 to 19 into ten ones and some further ones, e.g., by using objects or drawings, and record each composition or decomposition by a drawing or equation (e.g., 18 = 10 + 8); understand that these numbers are composed of ten ones and one, two, three, four, five, six, seven, eight, or nine ones

Resources:


  • Compose numbers
    a) Given pairs, triples, etc. of numbers, identify sums or products that can be computed; b) Each place in the base-ten place value is composed of ten units of the place to the left, i.e., one hundred is composed of ten bundles of ten, one ten is composed of ten ones, etc.
  • Decompose numbers
    Given a number, identify pairs, triples, etc. of numbers that combine to form the given number using subtraction and division.
  • Standard Algorithms for Addition and Subtraction

Predecessor Standards:

  • PK.OA.A.1
    Use concrete objects to model real-world addition (putting together) and subtraction (taking away) problems up through five.

Successor Standards:

  • 1.NBT.B.2
    Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:

Same Level Standards:

  • K.OA.A.3
    Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1).