MA19.2.21

Mathematics (2019) Grade(s): 2

MA19.2.21

Use addition and subtraction within 100 to solve word problems involving same units of length, representing the problem with drawings (such as drawings of rulers) and/or equations with a symbol for the unknown number.

Unpacked Content

Knowledge

Students know:
  • Students know strategies for solving addition and subtraction word problems involving length.

Skills

Students are able to:
  • represent quantities and operations physically, pictorially, or symbolically.
  • strategically use a variety of representations to solve problems with all addition and subtraction contexts.
  • use symbols to represent unknown quantities in equations.

Understanding

Students understand that:
  • that they can apply the concept of length to solve addition and subtraction word problems for numbers within 100.

Vocabulary

  • Units of length
  • Drawings
  • Equations
  • Symbol

Aligned Learning Resources

Add & Subtract Measurements StudyJam
Matchbox Car Measurement
Making a Shelf for Matchbox Cars
Solving Real World Measurement Problems
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