Scroll:Whole Numbers >> Multiplication >> saq (527)

Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.


 

1)  

What is the sum of the first and second common multiples of 4 and 7


Answer:_______________




2)  

What is the sum of the first and second common multiples of 9 and 10


Answer:_______________




3)  

What is the sum of the first and second common multiples of 4 and 6


Answer:_______________




4)  

What is the sum of the first and second common multiples of 7 and 4


Answer:_______________




5)  

What is the sum of the first and second common multiples of 2 and 5


Answer:_______________




6)  

What is the sum of the first and second common multiples of 7 and 8


Answer:_______________




7)  

What is the sum of the first and second common multiples of 2 and 4


Answer:_______________




8)  

What is the sum of the first and second common multiples of 7 and 2


Answer:_______________




9)  

What is the sum of the first and second common multiples of 4 and 7


Answer:_______________




10)  

What is the sum of the first and second common multiples of 2 and 3


Answer:_______________




 

1)  

What is the sum of the first and second common multiples of 4 and 7
Answer: 84


SOLUTION 1 :

Step 1: Common multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56
Step 2: Common multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63
Step 3: First and second common mutiples of 4 and 7 = 28 and 56
Step 4: 28 + 56 = 84

The sum is 84.



2)  

What is the sum of the first and second common multiples of 9 and 10
Answer: 270


SOLUTION 1 :

Step 1: Common multiples of 9: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, 117, 126, 135, 144, 153, 162, 171, 180
Step 2: Common multiples of 10: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200
Step 3: First and second common mutiples of 9 and 10 = 90 and 180
Step 4: 90 + 180 = 270

The sum is 270.



3)  

What is the sum of the first and second common multiples of 4 and 6
Answer: 36


SOLUTION 1 :

Step 1: Common multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36 
Step 2: Common multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54
Step 3: First and common mutiples of 4 and 6 = 24 and 12
Step 4: 24 + 12 = 36

The sum is 36.



4)  

What is the sum of the first and second common multiples of 7 and 4
Answer: 84


SOLUTION 1 :

Step 1: Common multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63 
Step 2: Common multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64
Step 3: First and second common mutiples of 7 and 4 = 28 and 56
Step 4: 28 + 56 = 84

The sum is 84.



5)  

What is the sum of the first and second common multiples of 2 and 5
Answer: 30


SOLUTION 1 :

Step 1: Common multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28
Step 2: Common multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40, 45
Step 3: First and second common mutiples of 2 and 5 = 10 and 20
Step 4: 10 + 20 = 30

The sum is 30.



6)  

What is the sum of the first and second common multiples of 7 and 8
Answer: 168


SOLUTION 1 :

Step 1: Common multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 105, 112, 119, 126, 133, 140
Step 2: Common multiples of 8: 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120, 128, 136, 144, 152, 160
Step 3: First and second common mutiples of 7 and 8 = 56 and 112
Step 4: 56 + 112 = 168

The sum is 168.



7)  

What is the sum of the first and second common multiples of 2 and 4
Answer: 12


SOLUTION 1 :

Step 1: Common multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18 
Step 2: Common multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36
Step 3: First and common mutiples of 2 and 4 = 8 and 4
Step 4: 8 + 4 = 12

The sum is 12.



8)  

What is the sum of the first and second common multiples of 7 and 2
Answer: 42


SOLUTION 1 :

Step 1: Common multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63 
Step 2: Common multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32
Step 3: First and second common mutiples of 7 and 2 = 14 and 28
Step 4: 14 + 28 = 42

The sum is 42.



9)  

What is the sum of the first and second common multiples of 4 and 7
Answer: 84


SOLUTION 1 :

Step 1: Common multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56
Step 2: Common multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63
Step 3: First and second common mutiples of 4 and 7 = 28 and 56
Step 4: 28 + 56 = 84

The sum is 84.



10)  

What is the sum of the first and second common multiples of 2 and 3
Answer: 18


SOLUTION 1 :

Step 1: Common multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40
Step 2: Common multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60
Step 3: First and second common mutiples of 2 and 3 = 6 and 12
Step 4: 6 + 12 = 18

The sum is 18.