Lesson plan

Round decimals by using a number line

teaches Common Core State Standards CCSS.Math.Content.5.NBT.A.4 http://corestandards.org/Math/Content/5/NBT/A/4
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7

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Big Ideas: Decimals can be rounded using an understanding of place value. Rounding happens when you have greater or less than half of the amount you are rounding. In previous grades, students were expected to round whole numbers to any place value using various methods. Grade level expectations require that students round decimals to any place value using the same methods as taught with a whole number. This skill is beneficial as students move on to computation of decimals and determining reasonable answers. Vocabulary: digit, number line, place value, round, tenths, hundredths, thousandths Special Materials: Number line