Topic 1
Positive Rational Numbers
Positive Rational Numbers
Find 8.1 + 2.53
10.63
What is the opposite of the following integers?
4, -5, -2, -(-7)
-4, 5, 2, -7
Write the exponent for this problem...
6 x 6 x 6 x 6 x 6
6 to the 5th power
Solve the equation:
a + 5.92 = 12.29
6.37
16 is what % of 25?
64 %
Lynn paid $12.21 for ribbon. The cost per yard was $1.48. How many yards of ribbon did Lynn buy?
8.25 yards
Divide 12.21 by 1.48 (move decimals)
Write the following least to greatest.
-1/3, 1, -1/6, 1/2
-1/3, -1/6, 1/2, 1
Write the prime factorization of 84
(Hint: factor down to all prime numbers)
2 x 2 x 3 x 7
Which equation is equivalent to x + 8 = 21 select all that apply...
A. 8k-4 = 20 + 4
B. 8k divided by 4 = 20 divided by 4
C. 8k x 3 = 20 x 3
D. 8k + 10 = 20 + 10
E. 8k x 5 = 20 divided by 5
B, C and D
Luis's chest measures 4 feet long, 2 feet wide and 2 and 1/4 feet high.
Formula used?
Volume of the chest?
Formula used v = l x w x h
Volume of the chest: 18ft cubed
Which equation has a product of 2/3?
A. 4/5 x 5/6
B. 7/8 x 9/10
C. 1/3 x 2/3
A. 4/5 x 5/6
On a science test , each wrong answer is scored as -2. What is the value of /-2/?
absolute 2
/2/
Solve this problem:
4.4 + (4 x 1/4 + 8.6)
14
Stan worked 4 fewer years than Marco. If Stan worked 29 years and m represents the number of years Marco has worked, the equation m - 4 = 29 represents this situation. How can you get the variable alone on one side of the equation?
By adding 4 to both sides
m - 4 + 4 = 29 + 4
Find the mean, median, mode for the following numbers...
2, 3, 3, 5, 4, 2, 4, 0, 1, 3
Mean: 2.7
Median: 3
Mode: 3
!!!!DOUBLE JEPOPARDY!!!!
A full bag of dog food weighs 5 1/2 pounds. How much dog food do you have if there are 3 3/4 bags in the cupboard?
5 1/2 x 3 3/4 = 20 5/8
20 5/8
Name the negative and positive signs in each of the quadrants?
Q1 - positive/positive
Q2 - negative/positive
Q3 - negative/negative
Q4 - positive/negative
A. (5 x 8) divided by s
B. 5 x (8 divided by s)
C. s x (5 + 8)
Samuel is 4 1/6 feet tall. His father is 5 3/4 feet tall. How much taller is Samuel's father than Samuel? Write an equation and solve.
4 1/6 + x = 5 3/4
Answer: 1 7/12 inches taller
Andrea's backyard is 400 square feet. Her rectangular swimming pool is 10 feet long, and 6 feet wide. What is the area of Andrea's backyard, not including the swimming pool?
340 ft squared
Kasey has 8 packages of gelatin. She plans to fill molds that each take 1 1/3 packages of gelatin. Each mold can be divided into 6 servings. How many serving of gelatin can Kasey make?
36
6 divided by 1/6
6/1 divided by 1/6
change sign and flip for reciprocal
What is the formula for perimeter of a rectangle and area of a rectangle?
Perimeter is 2 length times 2 width
Area is length times width
!!!!!DOUBLE JEOPARDY!!!!
3 is the greatest common factor for which set of numbers...select ALL that are correct...
A. 9,15
B. 12, 18
C. 15,27
D. 30, 45
A. Yes
B. No
C. Yes
D. No
The number of minutes of exercise, m, and the number of calories burned, c, during exercise
Which is the independent variable?
Which is the dependent variable?
Independent variable = M (exercise)
Dependent variable = C (calories)
Maria's math test had 25 questions. She got 84% correct. How many problems did she get wrong?
100 divided by 25 = 4
4 x 4 = 16
100 - 16 = 84 %