Rational Numbers
What is the square root of 144?
12
How many grams is equivalent to 1.5 kilograms?
1,500 grams
A coin is tossed and a number cube is rolled. What is the probability of getting Heads and a 3?
1/2 x 1/6 = 1/12
What is the value of n in the equation below?
2n + 1 = 21
n = 10
What is the least common multiple (LCM) of 15 and 10?
15, 30 10, 20, 30 LCM = 30
Which number is square root of 196?
14
Which of these is a unit of measure for the mass of a bag of apples? a. kilogram b. kilometer c. cubic inches d. square inches
a. kilogram
Randy spins the arrow on a spinner with 5 equal sections labeled A, B, C, D, and E. Then, he rolls a 6-sided number cube with sides numbered 1 through 6. What is the probability that the arrow will stop on the letter A and the number cube will show the number 4 ?
1/5 x 1/6 = 1/30
Simplify the expression below.
–4x - (–x)
-3x
What is the greatest common factor (GCF) of 108 and 420?
c. 12
The square root of a number is between 8 and 9. Which of these could be that number? a. 17 b. 63 c. 71 d. 89
c. 71
Jeffrey wants to measure the mass of his fish tank. Which tool is best for him to use? a. ruler b. scale c. tape measure d. measuring cup
b. scale
Joan flipped a coin 100 times during a mathematics experiment. The coin landed on tails 36 times. Based on Joan’s results, which of these statements is true? a. The coin landed on tails more than expected. b. The coin landed on heads less than expected. c. The coin landed on heads more than tails. d. The coin landed on heads less than tails.
c. The coin landed on heads more than tails.
What is the value of the expression?
2 + 3 x 3 + | –4 |
15
What is the greatest common factor (GCF) of 64 and 84?
b. 4
Between which two integers does the square root of 29 lie?
Between 5 and 6
What is the surface area, in square centimeters, of a rectangular prism that has a length of 10 centimeters, a width of 5 centimeters, and a height of 6 centimeters?
sa = 280 sq. cm.
A box contains 6 red pens and 4 blue pens. Cory randomly picks a pen from the box and keeps it. Then Todd randomly picks a pen from the box. What is the probability both boys will pick red pens?
3/5 x 5/9 = 15/45 or 1/3
Find the value of a in the equation below.
3a + 2 = a - 6
a = -4
Mario walks his dog once every 8 days in the park, while Todd walks his dog once every 14 days. Today, both Mario and Todd walked their dogs in the park. In how many more days will both boys walk their dogs in the park on the same day?
They will walk their dogs in the park together in 56 days.
The annual salaries of the employees working at Kevin’s restaurant are listed below. $21,750.00 $33,500.00 $18,900.00 $22,965.00 $30,080.00 $47,250.00 $37,750.00 $46,500.00 What is the range for these salaries?
Range = $28,350.00
The flower box in front of the main city library weighs 124 ounces. What does the flower box weigh in pounds?
7 3/4 pounds
Helen is preparing candy bags for the children at a party. She has 2 flavors of lollipops, 4 types of candy bars, and 6 flavors of chewy candies. If each bag contains 1 piece of each kind of candy, what is the total number of possible candy combinations for the bags?
48 possible candy combinations
Simplify the expression (-4)(3)(-1)(-2).
-24
What is the greatest common factor (GCF) of 450 and 735?
c. 15