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Chapter 4:Multiply Decimals
Decimal 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 0.35 =
10 X 0.35 =
100 X 0.35 =
1,000 X 0.35 =
1 X 2,154 =
0.1X 2,154 =
0.01X 2,154 =
0.001 X 2,154 =
100
101
102
103
X 24.46 =
X 24.46 =
X 24.46 =
X 24.46 =
7.02 X 1 =
7.02 X 10 =
7.02 X 100 =
7.02 X 1,000 =
100
101
102
103
X 0.16 =
X 0.16 =
X 0.16 =
X 0.16 =
230 X 1 =
230 X 0.1 =
230 X 0.01 =
230 X 0.001 =
Test Prep Lesson 4-1Use your clicker to answer the following question:
Lesson 4-2: Decimals and Whole Numbers
3 x 0.6 =
Find the product. Draw a quick picture
2 x 0.27 =
Find the product. Draw a quick picture
Find the product. Draw a quick picture
4 x 1.3 =
4 x 0.31 =
Find the product. Draw a quick picture
Test Prep Lesson 4-2Use your clicker to answer the following question:
Lesson 4-3: Multiply with Decimals and Whole Numbers
Place the decimal point in the product
2.36X
3 708
2.9X 5
145
14.93X 6
8958
Multiply:
5 x 2.5 =
8 x 1.35 =
8 x 0.35 =
21.72 x 4 =
Test Prep Lesson 4-3Use your clicker to answer the following question:
Lesson 4-4: Multiplying Using Expanded Form
13 x 6.8 =
Multiplying place value patterns
13 x 6.8 =
Draw a model to find the product.
10 3
6
0.8
60
8
18
2.4
60
818
2.4
88.4
+
39 x 4.8 =
Multiply sing place value patterns
39 x 4.8 =
Draw a model to find the product.
30 9
4
0.8
120
24
36
7.2
120
2436
7.2
187.2
+
Test Prep Lesson 4-4Use your clicker to answer the following question:
Lesson 4-5: Multiplying Money
Test Prep Lesson 4-5Use 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 =0.21
Shade first
vertically
Shade second
horizontally
Count the squares that are double shaded
0.9 X 1.5 =1.35
Shade first
vertically
Shade Second
horizontally
Count the squares that are double shaded
Test Prep Lesson 4-6Use your clicker to answer the following question:
Lesson 4-7: Multiply Decimals
352X 0.4
35.2X 0.4
3.52X 0.4
241X 12
241X 1.2
24.1X .12
Test Prep Lesson 4-7Use your clicker to answer the following question:
Lesson 4-8: Zeros in the Product
0.06X 0.9
0.6X 0.9
0.04X 0.2
0.4X 0.2
0.07X 0.2
0.7X 0.2
Test Prep Lesson 4-8Use your clicker to answer the following question: