This is a sample task from achievethecore.org. The purpose of this task is to help students understand composing and decomposing ones, tens, and hundreds.
CCSS.2.NBT.A.1
Composing and Decomposing
Subject
Math — Number and Operations in Base 10
Grade Level
Grades K-2
Resource Type
Lesson Plan
Standards Alignment
Common Core State Standards
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Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:
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