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.

160 × 50 = 16 × 50 × _____


Answer:_______________




2)  

Solve the problem below.

1900 × 40 = 19 × 4 × _____


Answer:_______________




3)  

Solve the problem below.

2400 × 50 = 240 × 5 × _____


Answer:_______________




4)  

Solve the problem below.

7200 × 60 = 72 × 6 × _____


Answer:_______________




5)  

Solve the problem below.

80 × 30 = 8 × 30 × _____


Answer:_______________




6)  

Solve the problem below.

1000 × 30 = 10 × 3 × _____


Answer:_______________




7)  

Solve the problem below.

100 × 20 = 10 × 2 × _____


Answer:_______________




8)  

Solve the problem below.

8600 × 180 = 86 × 18 × _____


Answer:_______________




9)  

Solve the problem below.

100 × 20 = 10 × 20 × _____


Answer:_______________




10)  

Solve the problem below.

1900 × 20 = 19 × 2 × _____


Answer:_______________




 

1)  

Solve the problem below.

160 × 50 = 16 × 50 × _____

Answer: 10


SOLUTION 1 :

Step 1: 160 x 50 = 8000
Step 2: 16 x 50 = 800
Step 3: 8000 ÷ 800 = 10



2)  

Solve the problem below.

1900 × 40 = 19 × 4 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 1900 x 40 = 76 000
Step 2: 19 x 4 = 76
Step 3: 76 000 ÷ 76 = 1000



3)  

Solve the problem below.

2400 × 50 = 240 × 5 × _____

Answer: 100


SOLUTION 1 :

Step 1: 2400 x 50 = 120000
Step 2: 240 x 5 = 1200
Step 3: 120000 ÷ 1200 = 100



4)  

Solve the problem below.

7200 × 60 = 72 × 6 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 7200 x 60 = 432 000
Step 2: 72 x 6 = 432
Step 3: 432 000 ÷ 432 = 1000



5)  

Solve the problem below.

80 × 30 = 8 × 30 × _____

Answer: 10


SOLUTION 1 :

Step 1: 80 x 30 = 2400
Step 2: 8 x 30 = 240
Step 3: 2400 ÷ 240 = 10



6)  

Solve the problem below.

1000 × 30 = 10 × 3 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 1000 x 30 = 30 000
Step 2: 10 x 3 = 30
Step 3: 30 000 ÷ 30 = 1000



7)  

Solve the problem below.

100 × 20 = 10 × 2 × _____

Answer: 100


SOLUTION 1 :

Step 1: 100 x 20 = 2000
Step 2: 10 x 2 = 20
Step 3: 2000 ÷ 20 = 100



8)  

Solve the problem below.

8600 × 180 = 86 × 18 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 8600 x 180 = 1548 000
Step 2: 86 x 18 = 1548
Step 3: 1548 000 ÷ 1548 = 1000



9)  

Solve the problem below.

100 × 20 = 10 × 20 × _____

Answer: 10


SOLUTION 1 :

Step 1: 100 x 20 = 2000
Step 2: 10 x 20 = 200
Step 3: 2000 ÷ 200 = 10



10)  

Solve the problem below.

1900 × 20 = 19 × 2 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 1900 x 20 = 38 000
Step 2: 19 x 2 = 38
Step 3: 38 000 ÷ 38 = 1000