Report

5.NF.5 Interpret multiplication as scaling • 5.NF.5a: Compare Products: Comparing the size of a product to the size of one factor on the basis of the size of the other factor, without performing the indicated multiplication. • 5.NF.5b: Explain the Results of Multiplying by a Fraction: Explaining why multiplying a given number by a fraction greater than 1 results in a product greater than the given number (recognizing multiplication by whole numbers greater than 1 as a familiar case); explaining why multiplying a given number by a fraction less than 1 results in a product smaller than the given number; and relating the principle of fraction equivalence a/b = (n×a) / (n×b) to the effect of multiplying a/b by 1. Without performing multiplication determine whether the product is <, >, or = to 6. Explain your reasoning. 2 x 6 4 3 x 6 6 4 x 6 2 3 2 x6 4 By comparing the sizes of the products for each circle, what pattern do you observe when you multiply a fraction by ? 2 2 ⅛ ¼ ⅛ ¼ 1 x 2 = 2 4 2 2 2 x 2 = 4 8 4 2 ⅛ ⅛ 4 8 5th 5.NF.5 Mathematical Practice(s): 2 Without performing the indicated multiplication, use < , >, or = to make each equation true by comparing the size of the product to the size of one factor on the basis of the size of the other factor. 461 x 3 3 461 x 7 3 461 x 3 3 461 x 2 3 5.NF.5 Mathematical Practice(s): 2 Without performing the indicated multiplication, use < , >, or = to make each equation true. 643 x 2 2 643 x 7 7 643 x 4 8 461 x 1 2 5.NF.5 Mathematical Practice(s): 2 Are the statements below True or False about the product of 372 and ¼ ? The product is less than 272 x ¼ The product is greater than 272 x ¼ The product is less than 372 The product is greater than 372 5.NF.5 Mathematical Practice(s): 2 Are the statements below True or False 6 about the product of 485 and ? 3 2 The product is less than 485 x 3 8 The product is greater than 485 x 3 The product is less than 485 The product is greater than 485 Mathematical Practice(s): 2 5.NF.5 Write Yes or No to indicate whether each fraction can make the equation a true inequality 2 × 3 10 4 4 4 4 10 2 > 3 Mathematical Practice(s): 2 5.NF.5 Write Yes or No to indicate whether each fraction can make the equation a true inequality 5 × 6 10 14 8 8 14 10 5 > 6 Mathematical Practice(s): 2 5.NF.5 Move each equation to the correct box 3 x 1 5 2 3 x 8 5 3 Less Than ⅗ 3 x 1 5 10 3 x 4 5 5 Equal to ⅗ 3 x 5 5 5 3 5 Greater Than ⅗ X 5