MA19.2.12

Mathematics (2019) Grade(s): 2

MA19.2.12
Add and subtract within 1000 using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method.

Unpacked Content

Knowledge

Students know:

how to count to 1,000.
how to identify hundreds, tens, and ones.
how to compose numbers.
how to decompose two digit numbers.
how to record strategies for solving addition and subtraction problems.

Skills

Students are able to:

add and subtract within 1000.
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/subtraction problems and written strategies of those models can be used to justify solutions.

Vocabulary

Compose
Decompose

Aligned Learning Resources

Toothpicks: Patterns in Geometric Shapes

Solving Real World Measurement Problems

Subtraction With Larger Numbers

Subtraction Within 1,000 on the Number Line

Solving Word Problems Within 1,000

Design by Adaptive Theme