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Comparing Numerical Expressions

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Round the factors to estimate the products 421 x 18 323 x 21 1,950 x 42 2,480 x 27 Review

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SWBAT write and interpret numerical expressions by: Comparing expressions Using a visual model Objective

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Expression Equation Sum Product Difference Quotient Vocabulary

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Please Excuse My Dear Aunt Sally (PEMDAS)

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Anthony is 11 years old. His mother, Tiffany, is 2 years more than 3 times Anthony’s age. How old is Tiffany? Review Problem

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Translate words into mathematical phrases and use a tape diagram 3 times the sum of 26 and 4; The sum of 2 twelves and 4 threes Problem 1-2

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6 times the sum of 26 and 4 The difference of 86 – 45 times 5 Now let’s try together….

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Translate mathematical phrases into words 8 × (43 – 13) (20 × 3) + (5 × 3) Problems 3-4

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7 x (24 + 16) (15 x 2) – (3 x2) Now let’s try together….

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Compare the expressions using, or =. 9 x 13 and 8 thirteens Problems 5

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The sum of 10 and 9 doubled and (2 x 10) + (2 x 9) Now let’s try together…..

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DO NOT WRITE ON PAPER!!! Group A: complete number 3 first Group B: complete number 1 first Group C: complete number 2 first Group D: you will be working with the teacher You have 10 minutes to complete the problems. If you finish early start on your journal entry. Problem Set 2.3

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Count off by threes’. Once you move to your area, share how you have got your answers with everyone in the group. You will 10 minutes to share. Once 10 minutes is up, a few students from each group with share what they learned from another student. You must share one of the problems you completed. Group Work

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1. Draw a model then write the numerical expressions. A. The difference between 8 forty-sevens and 7 forty- sevens B. 6 times the sum of 12 and 8 2. Compare the two expressions using >, <, or =. A. 62 x (70 + 8) (70 + 8) x 26 Exit Ticket

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