Scroll:Mental Sums >> Mental Sums >> saq (503)

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)  

Solve the problem below.

40 × 50 = 4 × 50 × _____


Answer:_______________




2)  

Solve the problem below.

200 × 20 = 2 × 2 × _____


Answer:_______________




3)  

Solve the problem below.

3400 × 140 = 34 × 14 × _____


Answer:_______________




4)  

Solve the problem below.

1900 × 40 = 190 × 4 × _____


Answer:_______________




5)  

Solve the problem below.

140 × 30 = 14 × 30 × _____


Answer:_______________




6)  

Solve the problem below.

2100 × 20 = 21 × 2 × _____


Answer:_______________




7)  

Solve the problem below.

4600 × 150 = 46 × 15 × _____


Answer:_______________




8)  

Solve the problem below.

1500 × 50 = 150 × 5 × _____


Answer:_______________




9)  

Solve the problem below.

120 × 30 = 12 × 30 × _____


Answer:_______________




10)  

Solve the problem below.

1500 × 30 = 15 × 3 × _____


Answer:_______________




 

1)  

Solve the problem below.

40 × 50 = 4 × 50 × _____

Answer: 10


SOLUTION 1 :

Step 1: 40 x 50 = 2000
Step 2: 4 x 50 = 200
Step 3: 2000 ÷ 200 = 10



2)  

Solve the problem below.

200 × 20 = 2 × 2 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 200 x 20 = 4 000
Step 2: 2 x 2 = 4
Step 3: 4 000 ÷ 4 = 1000



3)  

Solve the problem below.

3400 × 140 = 34 × 14 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 3400 x 140 = 476 000
Step 2: 34 x 14 = 476
Step 3: 476 000 ÷ 476 = 1000



4)  

Solve the problem below.

1900 × 40 = 190 × 4 × _____

Answer: 100


SOLUTION 1 :

Step 1: 1900 x 40 = 76000
Step 2: 190 x 4 = 760
Step 3: 76000 ÷ 760 = 100



5)  

Solve the problem below.

140 × 30 = 14 × 30 × _____

Answer: 10


SOLUTION 1 :

Step 1: 140 x 30 = 4200
Step 2: 14 x 30 = 420
Step 3: 4200 ÷ 420 = 10



6)  

Solve the problem below.

2100 × 20 = 21 × 2 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 2100 x 20 = 42 000
Step 2: 21 x 2 = 42
Step 3: 42 000 ÷ 42 = 1000



7)  

Solve the problem below.

4600 × 150 = 46 × 15 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 4600 x 150 = 690 000
Step 2: 46 x 15 = 690
Step 3: 690 000 ÷ 690 = 1000



8)  

Solve the problem below.

1500 × 50 = 150 × 5 × _____

Answer: 100


SOLUTION 1 :

Step 1: 1500 x 50 = 75000
Step 2: 150 x 5 = 750
Step 3: 75000 ÷ 750 = 100



9)  

Solve the problem below.

120 × 30 = 12 × 30 × _____

Answer: 10


SOLUTION 1 :

Step 1: 120 x 30 = 3600
Step 2: 12 x 30 = 360
Step 3: 3600 ÷ 360 = 10



10)  

Solve the problem below.

1500 × 30 = 15 × 3 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 1500 x 30 = 45 000
Step 2: 15 x 3 = 45
Step 3: 45 000 ÷ 45 = 1000