Adding Decimals, Subtracting Decimals, Multiplying Decimals, Dividing Decimals

When adding or subtracting with decimals, you -

• Move decimals out

• Shift decimals 3 places over

• Line up the decimals

• Ignore decimals

The place value right after the decimal is called the __________.

• tens

• tenths

• thousands

• hundrenths

Three place values BEHIND the decimal is the _______________.

• thousands

• millionths

• ones

• thousandths

When dividing with decimals, if the divisor (on the outside) has a decimal you-

• ignore all decimals and divide like normal

• "Slide & Slide"

• count place value and move that many to left

• "Raise the Roof"

A bakery sold 125.5 loaves of bread on Monday and 132.75 loaves on Tuesday. If each loaf costs $2.50, how much total revenue did the bakery earn from the loaves sold on these two days?

• $646.25

• $324.50

• $647.50

• $645.00

Answer explanation

Total revenue = (125.5 + 132.75) * $2.50 = $646.25. Therefore, the correct total revenue earned by the bakery is $646.25.

7.2 - 4.3=

• 2.9

• 3.9

• 3.1

• 2.1

Mike read a book for 2.5 hours on Saturday and 3.75 hours on Sunday. If he reads an additional 1.25 hours on Monday, how many hours in total will he have read?

• 6.0 hours

• 7.5 hours

• 5.5 hours

• 8.0 hours

Answer explanation

To find the total hours Mike read, add 2.5 hours on Saturday, 3.75 hours on Sunday, and 1.25 hours on Monday: 2.5 + 3.75 + 1.25 = 7.5 hours.

The tables shows the number of hours five employees at Frosty Treat Ice-Cream Shop worked in a week. What is the difference between the number of hours Danny and Carmen worked?

• 208.3 hours

• 55.35 hours

• 20.83 hours

• 21.06 hours

The tables shows the number of hours five employees at Frosty Treat Ice-Cream Shop worked in a week. What is the difference between the number of hours Danny and Carmen worked?

• 208.3 hours

• 55.35 hours

• 20.83 hours

• 21.06 hours