Decimals
What is 7.5 + 2.3?
Answer: 9.8
Calculate:
3 + 5 × 2?
Answer : 13
Convert 5 km to meters
Answer : 5000 meters
List the first five prime numbers.
Answer: The first five prime numbers are 2, 3, 5, 7, and 11.
What is the value of this expression?
3(25+19)+4(3)
Answer : 144
What is 6.8 - 4.2?
Answer: 2.6
Calculate :
(4 + 6) ÷ 2?
Answer : 5
Convert 1500 m to cm
Answer: 150,000 cm
Which of the following is prime: 29, 30, 31?
Answer: 29 and 31 are prime numbers; 30 is a composite number.
Mr. Nolan paid $46.99 for each adult shirt and $24.65 for each youth shirt he bought. Mr. Nolan bought 2 adult shirts and 5 youth shirts.
How much money did he spend on these shirts?
What is 3.6 × 4.2?
Answer: 15.12
Calculate:
2 × (3 + 4) - 5?
Answer: 9
Convert 59,045 grams to kilograms.
Answer: 0.059045
This prime number is the sum of the first three prime numbers.
Answer: (2+3+5) = 10
Kristin drinks 0.5 liter of orange juice with breakfast each day for 15 days. How many milliliters of orange juice does Kristin drink during the 15 days?
Answer: 7,500 mL
What is 9.2 x 4.50?
Calculate:
8 - 2 × (3 + 1)?
Answer: 2
What is the number of ounces in 3 pounds?
Answer: 48
1 pound = 16 ounces
Identify a composite number between 20 and 30 and explain why it is composite.
The composite numbers between 20 and 30 are:
21, 22, 24, 25, 26, 27, 28.
have more than two factors
What is the value of the expression shown?
2 x [ 30-20 ÷(5x2) ]
Answer: 56
What is 4.5 + 2.75 - 1.5?
Answer: 5.75
Calculate:
(14 - 6 ) x 2 + 9 ÷ 3
Answer: 19
How do you convert 10.50 kilometers to centimeters
K H D B d c m
Start in the letter K and move your decimal to the right.
Answer: 1,050,000 cm
This composite number is the product of the first three prime numbers.
(2 × 3 × 5)
Answer: 30
Margaret opened a new case of lightbulbs.
* The case contained 3 boxes of lightbulbs with 8 lightbulbs in each box.
* Margaret threw 2 of these lightbulbs in the trash because they were damaged.
* Then she took 7 of the lightbulbs out of the case.
Which expression can be used to show that there are 15 lightbulbs still int he case?
a. 3 x 8 -2 +7
b. 3(8) - 2(7)
c. 3 x 8 - (2+7)
d. 3 + 8 - 2 + 7
Answer c. 3 x 8 - (2 + 7)
Here's why:
So, the expression 3×8−(2+7)3 \times 8 - (2 + 7)3×8−(2+7) correctly represents the situation.