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Practice with Addition and Subtraction

In this set of related math tasks, 1st Grade students will build on their understanding of place value that began in Kindergarten in order to add and subtract within 100. Because operations with numbers such as tens and hundreds make for simple calculations, place value plays a critical role throughout the grades in the development of computation strategies.

Standards & Objectives

Learning objectives:

By the end of these seven tasks, students will be able to answer the following overarching questions:

When is it necessary to compose a ten when adding?
How can you find ten more and ten less than a two-digit number mentally?
Can you describe the process of adding any two-digit number?
What changes take place in a two-digit number when subtracting a multiple of 10?
How do we use equations to represent addition and subtraction?
What is the relationship between addition and subtraction?
How do you use addition (subtraction) to check your work on subtraction (addition)?

Task Arc Variations

Blooms taxonomy level:

Analyzing

Originator:

Tennessee Department of Education