 # Chapter 4: Multiply Decimals.

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Chapter 4: Multiply Decimals

Decimal Expanded Form Hundredths Multiplication Ones Pattern
A number with one or more digits to the right of the decimal point. Expanded Form A way to write a number that shows the value of each digit. Hundredths 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 A repeating sequence that follows a rule that repeats Place Value The value of a digit in a number based on the location of the digit Product The result when you multiply two numbers Tenths One of ten equal parts Thousandths One of one thousand equal parts

Lesson 4-1: Multiplication Patterns with Decimals

1 X 2,154 = 0.1X 2,154 = 0.01X 2,154 = 0.001 X 2,154 = 10 1 2 3 X 24.46 = 1 X = 10 X = 100 X = 1,000 X = 10 1 2 3 X 0.16 = 7.02 X 1 = 7.02 X 10 = 7.02 X 100 = 7.02 X 1,000 = 230 X 1 = 230 X 0.1 = 230 X 0.01 = 230 X =

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
2.9 X 145 14.93 X 8958 2.36 X 708

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 =

60 18 8 + 2.4 88.4 Draw a model to find the product. 13 x 6.8 = 10 3 6
0.8 2.4 8

Multiply sing place value patterns
39 x 4.8 =

120 36 24 + 7.2 187.2 Draw a model to find the product. 39 x 4.8 = 30
0.8 7.2 24

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

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

24.1 X .12 241 X 12 241 X 1.2

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 0.6 X 0.9 0.04 X 0.2 0.4 X 0.2 0.07 X 0.2 0.7 X 0.2

Test Prep Lesson 4-8 Use your clicker to answer the following question: