Decimal Operations
15.012 + 32.917 =
18.929
Ms. Juengel has two cats. Frodo weighs 12.3 pounds and Pippin weighs 11.9 pounds. How many pounds do the cats weigh in all? Show your work and the answer in the space below
24.2 pounds
What is the LCM of 8 and 4?
16
Identify what you must do to solve the problem:
Ms. Juengel receives $6 from each teacher. She collected a total of $348. How many teachers did she collect money from?
Divide 348 by 6
What do you need to do when dividing two decimals?
You must make the divisor a whole number!
Another distributive property! Surprise!
Distribute the following: 4(6 + 7)
= 24 + 28
= 62
Mr. Mickens has five posters. If one poster weighs 4.9 oz., how much would five posters weigh?
24.5 oz
What is the GCF of 35 and 15?
5
Identify what operation is occurring and how you know:
What is the product of 3.21 and 4.7?
Multiplication - product
How do you determine where the decimal point goes when multiplying two decimals?
You count the number of decimals in both numbers and move the same amount in your answer!
The list below shows the amount of snowfall over a day in different cities.
Denver: 4.672 inches
Aurora: 5.018 inches
Thornton: 4.23 inches
Boulder: 4.9 inches
How much more snow did Denver get than Thornton?
0.422 inches more
If there are 24 hours in a day, how many days are there in 360 hours?
15
Ms. Connelly walks a dog every 12 minutes and feeds them a treat every 8 minutes. After how many minutes will Ms. Connelly walk a dog and feed them a treat at the same time?
24 minutes
Identify how you would solve the problem to find the answer and how you knew:
Mr. Mickens has five posters. If one poster weighs 4.9 oz., how much would five posters weigh?
You would use multiply. The question askes for the weight of 5 posters when one weighs 4.9 oz
8.2 x 0.4 = ?
3.28
Surprise! Not Decimal Operations!:
A student uses the Distributive Property to rewrite 32 + 24. Which three expressions could the student use?
a. 4 (8 + 6)
b. 6 (5 + 4)
c. 8 (4 + 3)
d. 2 (16 + 12)
e. 3 (10 + 8)
a. 4 (8 + 6)
c. 8 (4 + 3)
d. 2 (16 + 12)
On Monday, Ms. Paschedag walked 4.750 miles and on Tuesday she walked 3.891 miles. What is the difference in walking distance between the two days?
0.859 miles difference
What is the GCF of 48 and 36?
12
Identify what you are trying to find in the following word problem and the key word:
Two students are playing a video game. One student kills an enemy every 6 seconds while the other kills an enemy every 5 seconds. How many seconds until both students kill an enemy at the same time?
The Least Common Multiple (LCM) - SAME TIME
If there are 16 cups in a gallon. How many gallons are in one hundred ninety-two cups?
12 gallons
Identify the two expressions that are equivalent to 24.9?
a. 15.6 + 9.3
b. 30.8 - 9.1
c. 18.4 + 7.2
d. 70.5 - 45.6
a. 15.6 + 9.3
d. 70.5 - 45.6
Ms. Juengel earns $7 every day she watches her neighbors cat. If she earned $168, how many days did she watch her neighbors cat?
24 days
There are 28 girls and 21 boys in Ms. Juengel's class. If she wants to put the students into equal groups, with equal amount of boys and girls, what is the GREATEST number of groups that Ms. Juengel can create?
7 groups
Identify what you are trying to find in the following word problem and the key word:
36 girls and 24 boys signed up for Jumpstart. Each group needs to have an equal number of boys and girls to complete the activity. What is the greatest number of teams possible that they could make?
The Greatest Common Factor (GCF) - GREATEST NUMBER
What is the value of the expression 106.8 ÷ 12?
8.9