Order of Operations  
#1  Evaluate the express : (8+3)^{2}  3 + 8 
The Answer is: 126 
#2  Evaluate the expression: 100  80 ÷ 4 + 3 
The answer is: 83 
#3  Evaluate the expression: 6 + 7 × 9 
The answer is 69 
#4  Evaluate the expression: 5^{2} × 4 ÷ 2  (83) 
The answer is: 45 
#5  Here is how a student simplified an expression. Is this correct? If not, where did the student amek a mistake? 2 × (123)^{2} +7 2 × (129) + 7 2 × 3 + 7 6 + 7 13

Answer: The student did not subtract 12  3 before squaring. It should look like this: 2 × (123)^{2} + 7 2 × 9^{2} + 7 2 × 81 + 7 162 + 7 169 
Decimals  
#1  Evaluate the following expression: 7.68 + 2.24 
Answer is: 9.92 
#2  Evaluate the expression: 40.4  5 
The answer is: 35.4 
#3  Evaluate the expression: 8.4 × 0.35 
The answer is: 2.940 
#4  Evaluate the expression: 6.00 ÷ 0.8 
The answer is: 7.5 
#5  Evaluate the expression: 281.06 ÷ 4.6 
The answer is: 61.1 
Fractions  
#1  Evaluate the expression: 3/10 + 1/5 
The answer is: 1/2 
#2  Evaluate the expression: 5 1/2  7/10 
The answer is: 4 4/5 
#3  Evaluate the Expression: 2 1/10 × 3 1/6 
The Answer is: 6 39/60 
#4  Evaluate the Expression: 2/5 ÷ 7/8 
The Answer is: 16/35 
#5  Evaluate the Expression: 7/8 ÷ 5 
The Answer is: 7/40 
Multiples and Factors  
#1  List all the factors of 64 
The Answer is: 1,2,4,8,16,32,64 
#2  List the first five Multiples of 16. 
Answer: 16, 32, 48, 64, 80 
#3  What is the GCF of 84 and 120? 
Answer: 84  1,2,3,4,6,7,12,14,21,28,42,84 120  1,2,3,4,5,6,8,10,12,15,20,24,30,40,60,120 GCF is 12 
#4  What is the LCM of 5, 6, and 10? 
Answer: 5 5,10,15,20,25,30,35,40,45,50 6,  6,12,18,24,30,36,42,48 10  10,20,30,40,50 LCM is 30 
#5  In a parade, 18 boys and 24 girls are merching in seperate rows. Each rwo requires the same number of students. What is the greatest number of students that can be in a row? 
Answer: Look for the GCF 18  1,2,3,6,9,18 24  1,2,3,4,6,8,12,24 The GCF is 6. Therefore the greatest number of students that can be in a row is 6. 
Area and Perimeter  
#1  What is the perimeter of a rectangle with width of 25 m and a heigth of 12 m? 
Answer: 74 m 

#2  What is the area of a a Parallelogram with base of 15 yd and a height of 12 yd? 
Answer: Area is 180 yd^{2}


#3  What is the area of a triangle witha base of 5 in and a heigth of 3 in?
A = 1/2 bh 
Answer: 7.5 in^{22} 

#4  Find the area of a triangle owith heigth of 27 cm and a base of 25 cm.
A = 1/2 bh 
Answer:
A = 337.5 cm 

#5  Find the circumference of a circle with a radius of 5 in.
C = 2∏ r 
Answer: 31.4 in 
Final Question  
Piano classes start at 9 am and are given every 60 minutes. Violin classes also start at 9 am and are given every 45 minutes. What is the next time at which a piano lesson and a violin lesson will start at the same time? 
Answer: 12 noon 