Operations with Decimals Review

Operations with Decimals Review

Adding & Subtracting Decimals

• Place the decimal point after each whole number

• Line up the decimal points

Open Ended

An expression is shown. What is the value of the expression?

2.83 + 153 + 3.4

Open Ended

Taraji bought an Airhead for $1.37 and a juice for $2.05. What is the total amount she paid?

Open Ended

Mrs. Thomas wants to buy a dress for her cousin's wedding. The dress she finds is $59.98. The store is offering a discount of $27.99. How much will Mrs. Thomas pay for the dress?

Multiplying Decimals

• If both factors are less than one, the product will be less than one

• If both factors are greater than one, the product will be greater than both factors

• If one factor is close to zero, the product WILL NOT be greater than one

Multiple Select

Which of the following has a product greater than one? Select all that apply.

• 1.5 X 0.8

• 2.8 X 1.2

• 0.38 X 0.9

• 0.7 X 1.8

• 1.9 X 0.02

Dividing Decimals

• When dividing by a whole number, use the area model or standard algorithm and just move the decimal point up

• When dividing by a decimal, shift the decimal in the divisor until it becomes a whole number and shift the decimal in the dividend the same number of times

• Use whole number division facts to divide with decimals when you can

Multiple Select

Which of the following gives a quotient less than 10? Select all that apply.

• 46.56 ÷ 5

• 18.28 ÷ 2

• 36.56 ÷ 3

• 56.84 ÷ 4

• 10.55 ÷ 5

Open Ended

Solve the expression

60 ÷ 1.5

Open Ended

Lawrence swam 5.32 miles on Monday and 3.59 on Tuesday. How many total miles did Lawrence swim?

Poll

Fill in your model to show 6.3 pounds of candy partitioned into 7 bags.

• My model is correct

• I'm not sure if my model is correct

Open Ended

Jeramie received $60 for his birthday. He spent $12.98 on a game. How much money does Jeramie have left?

Open Ended

Glaniah walks 2.5 miles to school every day. How far does she walk after 9 days?

Open Ended

What is 0.6 X 4.6?

Multiple Choice

5 - 1.08 = 4.08

• True

• False