Adding Decimals Lesson

Multiple Choice

WARM UP: Which represents: thirteen and seven tenths

• 13.7

• 13.07

• 13.007

• 1.37

Multiple Choice

WARM UP: Which number has 9 in the hundredths place?

• 23568.96

• 164386.59

• 25689.36

• 56894.569

Multiple Choice

WARM UP: In the number below, in what place value is the digit 2?

6.3529

• Ones

• Tenths

• Thousands

• Thousanths

Multiple Choice

WARM UP: Which represents the number below in standard form?

(5 x 1,000) + (6 x 100) + (7 x 1) + (2 x 0.1) + (3 x 0.01)

• 5,670.23

• 5,607.23

• 5,670.203

• 5,607.203

Multiple Choice

WARM UP: Which correctly shows the expanded notation of 34.78?

• (3 x 10) + (4 x 1) + (7 x ¹/₁₀) + (8 x ¹/₁₀₀)

• (3 x 100) + (4 x 1) + (7 x ¹/₁₀) + (8 x ¹/₁₀₀)

• (3 x 10) + (4 x 1) + (7 x 10) + (8 x 100)

• (3 x 100) + (4 x 10) + (7 x ¹/₁₀) + (8 x ¹/₁₀₀)

Multiple Select

WARM UP: Which number represents six and eighty-four thousandths in ANY form?  Check ALL that apply.

• (6 x 1) + (8 x 0.01) + (4 x 0.001)

• 6.84

• (6 x 1) + (8 x 0.8) + (4 x 0.01)

• 6.084

• (6 x 1) + (8 x $$\frac{1}{100}$$ ) + (4 x $$\frac{1}{1000}$$ )

5.3K

Adding

Decimals

8/19/21

​Copy the title and date into your journal

​Copy the Anchor Chart

​in your journal!!!!

Multiple Select

What are the rules for adding decimals? (select all correct answers)

• Line up The decimals and place values of the digits like you would in a place value chart!

• Add the digits with different place value position

• Bring the decimal point straight down in the sum

• Add the digits starting from the right-hand side with the same place value

• Fill in blank spaces with placeholder zeros.

Multiple Select

Which answer choice correctly lines up the problem,

217.5 +4.903

Make sure each digit is in the correct place value!

Multiple Select

Which answer choice correctly lines up the problem,

39.006 + 7.14

Make sure each digit is in the correct place value!

Multiple Choice

3.74 + 0.49

Show your work in your journal #1

• 4.13

• 3.789

• 4.23

• 3.24

Multiple Choice

7.41 + 0.741

Show your work in your journal #2

• 14.82

• 7.82

• 14.82

• 8.151

Multiple Choice

Roger hiked 5.8 miles on Saturday. Then, on Sunday, he hiked another 7.8 miles. How far did Roger hike all together?

Show your work in your journal #3

• 13.6

• 8.4

• 6.3

• 2.5

Multiple Choice

A chef bought 9.4 pounds of white rice and 2.08 pounds of brown rice. How much rice did the chef buy in all?

Show your work in your journal #4

• 12.4 pounds

• 12.2 pounds

• 11.48 pounds

• 5.6 pounds

Multiple Choice

THINK CAREFULLY: A large bag of sand weighs 48.5 pounds. A small bag of sand weighs 24.62 pounds. A medium bag of crushed rock weighs 38.25 pounds. If Mrs. Waggoner buys a large bag and a small bag of sand, how many pounds of sand did she purchase altogether?

Show your work in your journal #5

• 28.47 pounds

• 72.12 pounds

• 73.12 pounds

• 29.47 pounds

​BE VERY CAREFUL WHEN YOU ADD DECIMAL NUMBERS AND WHOLE NUMBERS TOGETHER.

​The rules do not change. We just need to be cautious of our place values when we line up the problem.

​

​Don't forget to use your place value chart to help you!

​

​Don't forget the decimal point!

​43 + 2.75

​4

​3

​0

​0

​0

​2

​7

​5

​____________________

​+

​4

​5

​7

​5

​.

​Copy ​in your journal!!!!

Multiple Choice

659.04 + 1

Show your work in your journal #6

• 659.05

• 659.14

• 660.04

• 759.04

Multiple Choice

210 + 0.95

Show your work in your journal #7

• 3.05

• 210.95

• 305

• 3.105

Multiple Choice

$1.85 + $185

Show your work in your journal #8

• 3.70

• $186.95

• $186.850

• None of the above