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Chapter 4: Multiply Decimals Decimal Expanded Form Hundredths A number with one or more digits to the right of the decimal point. A way to write a number that shows the value of each digit. One of one hundred equal parts Multiplication The process used to find the total number of items in a given Ones The value of a digit in the ones position on a place value chart Pattern Place Value Product Tenths Thousandths A repeating sequence that follows a rule that repeats The value of a digit in a number based on the location of the digit The result when you multiply two numbers One of ten equal parts One of one thousand equal parts Lesson 4-1: Multiplication Patterns with Decimals 10 10 10 10 0 24.46 = X 1 2 3 10 10 10 10 1 X 0.35 = X 24.46 = 10 X 0.35 = X 24.46 = 100 X 0.35 = X 24.46 = 1,000 X 0.35 = 0 1 X 2,154 = 0.1X 2,154 = 0.01X 2,154 = 0.001 X 2,154 = X 0.16 = 7.02 X 1 = 230 X 1 = X 0.16 = 7.02 X 10 = 230 X 0.1 = X 0.16 = 7.02 X 100 = 230 X 0.01 = 7.02 X 1,000 = 230 X 0.001 = 1 2 3 X 0.16 = Test Prep Lesson 4-1 Use your clicker to answer the following question: Lesson 4-2: Decimals and Whole Numbers Find the product. Draw a quick picture 3 x 0.6 = Find the product. Draw a quick picture 2 x 0.27 = Find the product. Draw a quick picture 4 x 1.3 = Find the product. Draw a quick picture 4 x 0.31 = Test Prep Lesson 4-2 Use your clicker to answer the following question: Lesson 4-3: Multiply with Decimals and Whole Numbers Place the decimal point in the product 2.36 X 3 708 X 2.9 5 14.93 X 6 145 8958 Multiply: 8 x 0.35 = 5 x 2.5 = 8 x 1.35 = 21.72 x 4 = Test Prep Lesson 4-3 Use your clicker to answer the following question: Lesson 4-4: Multiplying Using Expanded Form Multiplying place value patterns 13 x 6.8 = Draw a model to find the product. 60 13 x 6.8 = 10 6 60 3 18 18 8 + 2.4 88.4 0.8 8 2.4 Multiply sing place value patterns 39 x 4.8 = Draw a model to find the product. 120 39 x 4.8 = 30 4 120 9 36 + 36 24 7.2 187.2 0.8 24 7.2 Test Prep Lesson 4-4 Use your clicker to answer the following question: Lesson 4-5: Multiplying Money Test Prep Lesson 4-5 Use your clicker to answer the following question: Lesson 4-6: Decimal Multiplication Add slides to show one tenth x one tenth 0.3 X 0.7 = Shade second horizontally Shade first vertically 0.21 Count the squares that are double shaded 0.9 X Shade Second horizontally 1.5 = 1.35 Shade first vertically Count the squares that are double shaded Test Prep Lesson 4-6 Use your clicker to answer the following question: Lesson 4-7: Multiply Decimals 352 X 0.4 35.2 X 0.4 3.52 X 0.4 241 X 12 241 X 1.2 24.1 X .12 Test Prep Lesson 4-7 Use your clicker to answer the following question: Lesson 4-8: Zeros in the Product 0.06 X 0.9 0.04 X 0.2 0.07 X 0.2 X 0.6 0.9 X 0.4 0.2 X 0.7 0.2 Test Prep Lesson 4-8 Use your clicker to answer the following question: