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.

7000 × 140 = 70 × 14 × _____


Answer:_______________




2)  

Solve the problem below.

70 × 50 = 7 × 50 × _____


Answer:_______________




3)  

Solve the problem below.

700 × 30 = 7 × 3 × _____


Answer:_______________




4)  

Solve the problem below.

1600 × 50 = 160 × 5 × _____


Answer:_______________




5)  

Solve the problem below.

4100 × 80 = 41 × 8 × _____


Answer:_______________




6)  

Solve the problem below.

170 × 50 = 17 × 50 × _____


Answer:_______________




7)  

Solve the problem below.

1000 × 50 = 10 × 5 × _____


Answer:_______________




8)  

Solve the problem below.

400 × 40 = 40 × 4 × _____


Answer:_______________




9)  

Solve the problem below.

5300 × 190 = 53 × 19 × _____


Answer:_______________




10)  

Solve the problem below.

110 × 50 = 11 × 50 × _____


Answer:_______________




 

1)  

Solve the problem below.

7000 × 140 = 70 × 14 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 7000 x 140 = 980 000
Step 2: 70 x 14 = 980
Step 3: 980 000 ÷ 980 = 1000



2)  

Solve the problem below.

70 × 50 = 7 × 50 × _____

Answer: 10


SOLUTION 1 :

Step 1: 70 x 50 = 3500
Step 2: 7 x 50 = 350
Step 3: 3500 ÷ 350 = 10



3)  

Solve the problem below.

700 × 30 = 7 × 3 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 700 x 30 = 21 000
Step 2: 7 x 3 = 21
Step 3: 21 000 ÷ 21 = 1000



4)  

Solve the problem below.

1600 × 50 = 160 × 5 × _____

Answer: 100


SOLUTION 1 :

Step 1: 1600 x 50 = 80000
Step 2: 160 x 5 = 800
Step 3: 80000 ÷ 800 = 100



5)  

Solve the problem below.

4100 × 80 = 41 × 8 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 4100 x 80 = 328 000
Step 2: 41 x 8 = 328
Step 3: 328 000 ÷ 328 = 1000



6)  

Solve the problem below.

170 × 50 = 17 × 50 × _____

Answer: 10


SOLUTION 1 :

Step 1: 170 x 50 = 8500
Step 2: 17 x 50 = 850
Step 3: 8500 ÷ 850 = 10



7)  

Solve the problem below.

1000 × 50 = 10 × 5 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 1000 x 50 = 50 000
Step 2: 10 x 5 = 50
Step 3: 50 000 ÷ 50 = 1000



8)  

Solve the problem below.

400 × 40 = 40 × 4 × _____

Answer: 100


SOLUTION 1 :

Step 1: 400 x 40 = 16000
Step 2: 40 x 4 = 160
Step 3: 16000 ÷ 160 = 100



9)  

Solve the problem below.

5300 × 190 = 53 × 19 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 5300 x 190 = 1007 000
Step 2: 53 x 19 = 1007
Step 3: 1007 000 ÷ 1007 = 1000



10)  

Solve the problem below.

110 × 50 = 11 × 50 × _____

Answer: 10


SOLUTION 1 :

Step 1: 110 x 50 = 5500
Step 2: 11 x 50 = 550
Step 3: 5500 ÷ 550 = 10