MA19.1.13

Mathematics (2019) Grade(s): 1

MA19.1.13

Add within 100, using concrete models or drawings and strategies based on place value.

Unpacked Content

Knowledge

Students know:
  • how to add within 100 using place vaue strategies.
  • how to identify tens and ones.
  • how to compose two digit numbers.
  • how to decompose two digit numbers.

Skills

Students are able to:
  • add within 100.
  • Model addition problems using visual models.
  • Record strategies for solving addition problems.
  • Communicate the relationship between models and symbolic (numeric) representations.

Understanding

Students understand that:
  • relationships between models of addition problems and written strategies of those models can be used to justify solutions.

Vocabulary

  • Compose
  • Multiple of 10

Aligned Learning Resources

Let's Throw Paper!! Addition Game
Lucky Six
Modeling Base Ten Addition and Subtraction
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