Students use various strategies to solve problems using mental math.
This lesson requires students to work mentally with two-digit and three-digit numbers. If basic multiplication facts are not yet mastered, be prepared to adjust numbers in calculations to suit the learner’s level. A good time to review mental math strategies is during Sprints and fluency activities. Spending time working on basic facts (with flash cards, computer games, etc.) may be necessary prior to this lesson.
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From EngageNY.org of the New York State Education Department. Grade 5 Mathematics Module 2, Topic B, Lesson 4.
Available from engageny.org/resource/grade-5-mathematics-module-2-topic-b-lesson-4; accessed 2015-05-29.
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