Solve the equation
37.19 + 622.8 =
659.99
When adding decimals what do you need to remember to do when solving and where does your decimal go in your answer?
-Line up decimals places, fill in 0's if needed
-Add numbers starting at the right
-Bring the decimal straight down in your answer
What is the answer to an addition problem called?
Sum
Rolando bought 9 grapefruit. Each grapefruit had a mass of 0.397 kilogram. Which expression can be used to find the total mass of the grapefruit that Rolando bought?
9 × 0.397
A scientist used 5.6 liters of water and 4.92 liters of vinegar to perform a science experiment. How much more water than vinegar did the scientist use?
0.68 liter
54.06 − 19.312 =
34.748
When subtracting decimals, what do you need to remember to do with your decimal when setting up the problem and where does the decimal goes in your answer?
-Line up decimals places, fill in 0's if needed
-Add numbers starting at the right
-Bring the decimal straight down in your answer
What is the answer to a subtraction problems called?
Difference
The average size of a dairy farm is 175.84 acres. This is 1.4 times the size of Mr. Maldova’s farm. What is the expression needed to solve this problem?
175.84 X 1.4
A truck is loaded with 42,008 pounds of crates. If each crate weighs 472 pounds, how many crates are loaded onto the truck?
89
8.92 × 7.4 =
66.008
How do you determine where your decimal goes in your answer when multiplying?
You need to count the total number of decimal places in both factors to figure out where your decimal goes in your answer.
What is the answer to a multiplication problem called?
Product
A new library has 2,300 books to put on the shelves. Each shelf holds 57 books. How many shelves will be completely full of books? What expression can be used to solve?
2,300 / 57
A cheetah can run at a speed of 74.56 miles per hour. A racehorse can run at a speed of 38.9 miles per hour. How much faster can a cheetah run than a racehorse in miles per hour?
35.66
6.084 ÷ 0.65 =
9.36
What is the rule for dividing decimals? How do you know how many decimal places to move your decimal?
Move the decimal in the divisor to make it a whole number. Move the dividend decimal the same number of spaces. Decimal then goes straight up in your answer.
What is the answer to a division problem called?
Quotient
Last week Sanjay ran 20.5 miles less than Rachel. If Sanjay ran 15.64 miles, how far did Rachel run? What expression can be used to solve this problem?
15.64 + 20.5
A group of friends went to the movies together. They paid a total of $49.50 for the movie tickets and $32.40 for snacks to share. If each person paid $13.65, how many people were in the group?
6
If you have a whole number as a divisor, what would you do with your decimal point in the dividend? How many places would the decimal move? (Example: 20.5 ÷ 10)
The decimal would not move since the divisor is a whole number. The decimal just goes straight up in your answer.
In a division problem, 10 ÷ 0.2, which number is the dividend and which number is the divisor?
Dividend - 10
Divisor-0.2
Olivia climbs 9.75 meters higher than her current elevation of 11.8. What expression can be used to solve this problem?
9.75 + 11.8
A new library has 2,300 books to put on the shelves. Each shelf holds 57 books. How many shelves will be completely full of books?
40