Description
Students work with the standard algorithm for subtraction in Topic E. As in Topic D, they use two- and three-digit metric measurements and intervals of minutes within 1 hour to subtract. The sequence of complexity that builds from Lessons 18–20 mirrors the progression used for teaching addition. In Lesson 18, students begin by decomposing once to subtract, modeling their work on the place value chart. They use three-digit minuends that may contain zeros in the tens or ones place. By the end of the lesson, they are less reliant on the model of the place value chart and practice using the algorithm with greater confidence.
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Highlights
Digital downloads
Grades
3rd
Subjects
Standards
CCSS3.MD.A.1
CCSS3.MD.A.2
CCSS3.NBT.A.1
Pages
63
Teaching Duration
4 days
Description
Students work with the standard algorithm for subtraction in Topic E. As in Topic D, they use two- and three-digit metric measurements and intervals of minutes within 1 hour to subtract. The sequence of complexity that builds from Lessons 18–20 mirrors the progression used for teaching addition. In Lesson 18, students begin by decomposing once to subtract, modeling their work on the place value chart. They use three-digit minuends that may contain zeros in the tens or ones place. By the end of the lesson, they are less reliant on the model of the place value chart and practice using the algorithm with greater confidence.
Report this resource to TPT
Reported resources will be reviewed by our team. Report this resource to let us know if this resource violates TPT's content guidelines.
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Questions & Answers
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Standards
to see state-specific standards (only available in the US).
CCSS3.MD.A.1
Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram.
CCSS3.MD.A.2
Measure and estimate liquid volumes and masses of objects using standard units of grams (g), kilograms (kg), and liters (l). Add, subtract, multiply, or divide to solve one-step word problems involving masses or volumes that are given in the same units, e.g., by using drawings (such as a beaker with a measurement scale) to represent the problem.
CCSS3.NBT.A.1
Use place value understanding to round whole numbers to the nearest 10 or 100.
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