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 × 30 = 16 × 30 × _____


Answer:_______________




2)  

Solve the problem below.

9700 × 230 = 97 × 23 × _____


Answer:_______________




3)  

Solve the problem below.

800 × 40 = 8 × 4 × _____


Answer:_______________




4)  

Solve the problem below.

800 × 50 = 80 × 5 × _____


Answer:_______________




5)  

Solve the problem below.

200 × 30 = 20 × 30 × _____


Answer:_______________




6)  

Solve the problem below.

7000 × 210 = 70 × 21 × _____


Answer:_______________




7)  

Solve the problem below.

1800 × 20 = 18 × 2 × _____


Answer:_______________




8)  

Solve the problem below.

2100 × 20 = 210 × 2 × _____


Answer:_______________




9)  

Solve the problem below.

90 × 40 = 9 × 40 × _____


Answer:_______________




10)  

Solve the problem below.

9200 × 70 = 92 × 7 × _____


Answer:_______________




 

1)  

Solve the problem below.

160 × 30 = 16 × 30 × _____

Answer: 10


SOLUTION 1 :

Step 1: 160 x 30 = 4800
Step 2: 16 x 30 = 480
Step 3: 4800 ÷ 480 = 10



2)  

Solve the problem below.

9700 × 230 = 97 × 23 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 9700 x 230 = 2231 000
Step 2: 97 x 23 = 2231
Step 3: 2231 000 ÷ 2231 = 1000



3)  

Solve the problem below.

800 × 40 = 8 × 4 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 800 x 40 = 32 000
Step 2: 8 x 4 = 32
Step 3: 32 000 ÷ 32 = 1000



4)  

Solve the problem below.

800 × 50 = 80 × 5 × _____

Answer: 100


SOLUTION 1 :

Step 1: 800 x 50 = 40000
Step 2: 80 x 5 = 400
Step 3: 40000 ÷ 400 = 100



5)  

Solve the problem below.

200 × 30 = 20 × 30 × _____

Answer: 10


SOLUTION 1 :

Step 1: 200 x 30 = 6000
Step 2: 20 x 30 = 600
Step 3: 6000 ÷ 600 = 10



6)  

Solve the problem below.

7000 × 210 = 70 × 21 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 7000 x 210 = 1470 000
Step 2: 70 x 21 = 1470
Step 3: 1470 000 ÷ 1470 = 1000



7)  

Solve the problem below.

1800 × 20 = 18 × 2 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 1800 x 20 = 36 000
Step 2: 18 x 2 = 36
Step 3: 36 000 ÷ 36 = 1000



8)  

Solve the problem below.

2100 × 20 = 210 × 2 × _____

Answer: 100


SOLUTION 1 :

Step 1: 2100 x 20 = 42000
Step 2: 210 x 2 = 420
Step 3: 42000 ÷ 420 = 100



9)  

Solve the problem below.

90 × 40 = 9 × 40 × _____

Answer: 10


SOLUTION 1 :

Step 1: 90 x 40 = 3600
Step 2: 9 x 40 = 360
Step 3: 3600 ÷ 360 = 10



10)  

Solve the problem below.

9200 × 70 = 92 × 7 × _____

Answer: 1000


SOLUTION 1 :

Step 1: 9200 x 70 = 644 000
Step 2: 92 x 7 = 644
Step 3: 644 000 ÷ 644 = 1000