+ and - Decimals
True or Flase: You should line up the decimals when you are adding or subtracting decimals.
True.
True or False: When you are multiplying factors with decimals, you should always line up the decimals.
False, you do not need to line up the decimals when you are multiplying.
What is the first step when you are dividing fractions?
Keep the first fraction.
When dividing mixed numbers, what is the very first step you need to make?
When you are adding or subtracting decimals, how do you know where to put a decimal point for a whole number (for example: 32)?
Every whole number has an invisible decimal at the end of the number (for example: 32.0)
What is the sum:
22 + 0.97
22.97
When multiplying, how do you know where to put the decimal place in the product?
Count the total number of places behind the decimals in the factors and put it in your product.
What does find the reciprocal mean?
Flip
Find the quotient.
5/4 ÷ 1 1/12
15/13 or 1 2/13
What is the name of the answer to a subtraction problem called?
Difference
What is the difference:
22 - 0.97
21.03
Where does the decimal place go in this product?
12.2 x 5.12 = 62464
62.464
What is the reciprocal of 4?
1/4
Vikki is making pillows. Each pillow requires 3/5 yard of fabric. Raven has 6 2/3 yards of fabric. Find the number of pillows she can make.
100/9 = 11 1/9
11 pillows with 1/9 yard of fabric left over.
What is the name of the answer to a division problem called?
Quotient
A sandbox measures 2.8 meters by 1.9 meters. How many meters of wood will be needed to go all of the way around the perimeter of the sandbox?
9.4 meters
What is the product:
12.3 x 1.23
15.129
Find the quotient
5/8 ÷ 4 =
5/32
What is the length of a rectangle with an area of 8 1/10 square feet and a width of 2 1/4 feet?
3 3/5 feet
Rewrite this mixed number as an improper fraction:
12 2/3
38/3
Sara needs more money to buy a new scrapbook that costs $8.35. She has $4.88. How much more money does Sara need to buy the scrapbook?
$3.47
Tom and Sam sold 15.5 pounds of trail mix. They sold the trail mix for $3.98 per pound. How much money did they collect?
$61.69
2/3 ÷ 1/9 =
6
A model train is 15 3/4 inches long. Each car in this train is 2 5/8 inches in length. How many cars are in the train?
6 cars
What is the quotient of 1,242 ÷ 18?
69