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.

1600 × 30 = 16 × 3 × _____


Answer:_______________




2)  

Solve the problem below.

4800 × 140 = 48 × 14 × _____


Answer:_______________




3)  

Solve the problem below.

2300 × 50 = 230 × 5 × _____


Answer:_______________




4)  

Solve the problem below.

130 × 40 = 13 × 40 × _____


Answer:_______________




5)  

Solve the problem below.

2200 × 40 = 22 × 4 × _____


Answer:_______________




6)  

Solve the problem below.

7700 × 200 = 77 × 20 × _____


Answer:_______________




7)  

Solve the problem below.

1900 × 30 = 190 × 3 × _____


Answer:_______________




8)  

Solve the problem below.

20 × 40 = 2 × 40 × _____


Answer:_______________




9)  

Solve the problem below.

1700 × 30 = 17 × 3 × _____


Answer:_______________




10)  

Solve the problem below.

2300 × 230 = 23 × 23 × _____


Answer:_______________




 

1)  

Solve the problem below.

1600 × 30 = 16 × 3 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 1600 x 30 = 48 000
Step 2: 16 x 3 = 48
Step 3: 48 000 ÷ 48 = 1000



2)  

Solve the problem below.

4800 × 140 = 48 × 14 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 4800 x 140 = 672 000
Step 2: 48 x 14 = 672
Step 3: 672 000 ÷ 672 = 1000



3)  

Solve the problem below.

2300 × 50 = 230 × 5 × _____

Answer: 100


SOLUTION 1 :

Step 1: 2300 x 50 = 115000
Step 2: 230 x 5 = 1150
Step 3: 115000 ÷ 1150 = 100



4)  

Solve the problem below.

130 × 40 = 13 × 40 × _____

Answer: 10


SOLUTION 1 :

Step 1: 130 x 40 = 5200
Step 2: 13 x 40 = 520
Step 3: 5200 ÷ 520 = 10



5)  

Solve the problem below.

2200 × 40 = 22 × 4 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 2200 x 40 = 88 000
Step 2: 22 x 4 = 88
Step 3: 88 000 ÷ 88 = 1000



6)  

Solve the problem below.

7700 × 200 = 77 × 20 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 7700 x 200 = 1540 000
Step 2: 77 x 20 = 1540
Step 3: 1540 000 ÷ 1540 = 1000



7)  

Solve the problem below.

1900 × 30 = 190 × 3 × _____

Answer: 100


SOLUTION 1 :

Step 1: 1900 x 30 = 57000
Step 2: 190 x 3 = 570
Step 3: 57000 ÷ 570 = 100



8)  

Solve the problem below.

20 × 40 = 2 × 40 × _____

Answer: 10


SOLUTION 1 :

Step 1: 20 x 40 = 800
Step 2: 2 x 40 = 80
Step 3: 800 ÷ 80 = 10



9)  

Solve the problem below.

1700 × 30 = 17 × 3 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 1700 x 30 = 51 000
Step 2: 17 x 3 = 51
Step 3: 51 000 ÷ 51 = 1000



10)  

Solve the problem below.

2300 × 230 = 23 × 23 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 2300 x 230 = 529 000
Step 2: 23 x 23 = 529
Step 3: 529 000 ÷ 529 = 1000