Scroll:Mental Sums >> Mental Sums >> saq (545)

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)  

How many right angles will the minute hand form when it moves from 4.10 am to 3.40 pm


Answer:_______________




2)  

How many right angles will the minute hand form when it moves from 8.11 am to 10.26 pm


Answer:_______________




3)  

How many right angles will the minute hand form when it moves from 6.12 am to 6.57 pm


Answer:_______________




4)  

How many right angles will the minute hand form when it moves from 6.13 am to 5.28 pm


Answer:_______________




5)  

How many right angles will the minute hand form when it moves from 2.14 am to 10.44 pm


Answer:_______________




6)  

How many right angles will the minute hand form when it moves from 9.12 am to 5.57 pm


Answer:_______________




7)  

How many right angles will the minute hand form when it moves from 7.11 am to 3.41 pm


Answer:_______________




8)  

How many right angles will the minute hand form when it moves from 8.11 am to 6.41 pm


Answer:_______________




9)  

How many right angles will the minute hand form when it moves from 2.10 am to 8.40 pm


Answer:_______________




10)  

How many right angles will the minute hand form when it moves from 5.13 am to 1.58 pm


Answer:_______________




 

1)  

How many right angles will the minute hand form when it moves from 4.10 am to 3.40 pm

Answer: 46


SOLUTION 1 :

Step 1: 4.10 am → 3.10 pm = 11 h
Step 2: 11 x 4 = 44 right angles
Step 3: 40 - 10 = 30 min
Step 4: 30 ÷ 15 = 2 right angles
Step 5: 2 + 44 = 46 right angles
 

The minute hand will form 46 right angles.



2)  

How many right angles will the minute hand form when it moves from 8.11 am to 10.26 pm

Answer: 57


SOLUTION 1 :

Step 1: 8.11 am → 10.11 pm = 14 h
Step 2: 14 x 4 = 56 right angles
Step 3: 26 - 11 = 15 min
Step 4: 15 ÷ 15 = 1 right angles
Step 5: 1 + 56 = 57 right angles
 

The minute hand will form 57 right angles.



3)  

How many right angles will the minute hand form when it moves from 6.12 am to 6.57 pm

Answer: 51


SOLUTION 1 :

Step 1: 6.12 am → 6.12 pm = 12 h
Step 2: 12 x 4 = 48 right angles
Step 3: 57 - 12 = 45 min
Step 4: 45 ÷ 15 = 3 right angles
Step 5: 3 + 48 = 51 right angles
 

The minute hand will form 51 right angles.



4)  

How many right angles will the minute hand form when it moves from 6.13 am to 5.28 pm

Answer: 45


SOLUTION 1 :

Step 1: 6.13 am → 5.13 pm = 11 h
Step 2: 11 x 4 = 44 right angles
Step 3: 28 - 13 = 15 min
Step 4: 15 ÷ 15 = 1 right angles
Step 5: 1 + 44 = 45 right angles
 

The minute hand will form 45 right angles.



5)  

How many right angles will the minute hand form when it moves from 2.14 am to 10.44 pm

Answer: 82


SOLUTION 1 :

Step 1: 2.14 am → 10.14 pm = 20 h
Step 2: 20 x 4 = 80 right angles
Step 3: 44 - 14 = 30 min
Step 4: 30 ÷ 15 = 2 right angles
Step 5: 2 + 80 = 82 right angles
 

The minute hand will form 82 right angles.



6)  

How many right angles will the minute hand form when it moves from 9.12 am to 5.57 pm

Answer: 35


SOLUTION 1 :

Step 1: 9.12 am → 5.12 pm = 8 h
Step 2: 8 x 4 = 32 right angles
Step 3: 57 - 12 = 45 min
Step 4: 45 ÷ 15 = 3 right angles
Step 5: 3 + 32 = 35 right angles
 

The minute hand will form 35 right angles.



7)  

How many right angles will the minute hand form when it moves from 7.11 am to 3.41 pm

Answer: 34


SOLUTION 1 :

Step 1: 7.11 am → 3.11 pm = 8 h
Step 2: 8 x 4 = 32 right angles
Step 3: 41 - 11 = 30 min
Step 4: 30 ÷ 15 = 2 right angles
Step 5: 2 + 32 = 34 right angles
 

The minute hand will form 34 right angles.



8)  

How many right angles will the minute hand form when it moves from 8.11 am to 6.41 pm

Answer: 42


SOLUTION 1 :

Step 1: 8.11 am → 6.11 pm = 10 h
Step 2: 10 x 4 = 40 right angles
Step 3: 41 - 11 = 30 min
Step 4: 30 ÷ 15 = 2 right angles
Step 5: 2 + 40 = 42 right angles
 

The minute hand will form 42 right angles.



9)  

How many right angles will the minute hand form when it moves from 2.10 am to 8.40 pm

Answer: 74


SOLUTION 1 :

Step 1: 2.10 am → 8.10 pm = 18 h
Step 2: 18 x 4 = 72 right angles
Step 3: 40 - 10 = 30 min
Step 4: 30 ÷ 15 = 2 right angles
Step 5: 2 + 72 = 74 right angles
 

The minute hand will form 74 right angles.



10)  

How many right angles will the minute hand form when it moves from 5.13 am to 1.58 pm

Answer: 35


SOLUTION 1 :

Step 1: 5.13 am → 1.13 pm = 8 h
Step 2: 8 x 4 = 32 right angles
Step 3: 58 - 13 = 45 min
Step 4: 45 ÷ 15 = 3 right angles
Step 5: 3 + 32 = 35 right angles
 

The minute hand will form 35 right angles.