Grade 5 TR 1

1. What are the two consecutive prime numbers whose difference is 2 called? 

• Twin primes

• Co − primes

• Even primes 

• Odd primes 

2. How many millions make 10 crores? 

• 1

• 10

• 100

• 1000

Which of the following numbers when rounded off to the nearest ten thousands gives 500000? 

• 492811

• 495213

• 589200

• 513076 

4. Which one of the following is the best estimation of 5663 x 2234 ? 

• 5000 x 2000

• 5700 x 2200 

• 5660 x 2230

• 5660 x 2300 

5. The value of digit ‘3’ in 239766 is how many times as much as the value of digit 6 in 45655 ? 

• 10

• 50

• 500

• 1000

6. I am greater than 50 but smaller than 75. I am a multiple of 6. When I am divided by 9, the remainder is 3. Which number am I ? 

• 60

• 72

• 68

• 66 

7. Arrange the digits 3, 5, 9, 7, 2 and 6 to form the smallest possible 6 - digit number. In which place is the digit 6? 

• Hundreds

• Thousands

• Ten thousands

• Hundred thousands 

8. Which of the following statement is true? 

(i) All pair of prime numbers are co-primes. 

(ii) All co-prime numbers are twin primes. 

(iii) All co-prime numbers are pair of composite numbers. 

• only (i)

• only (iii) 

• only (i) and (ii)

• only (ii) and (ii)

9. What is the missing digit in 3_6013 if 3_6013 

= 300000 + 70000 + 6000 + 10 + 3 ? 

• 3

• 6

• 1

• 7

10. With which place does a 7-digit number start in the Indian system ? 

 

• Lakhs

• Ten thousands 

• Ten lakhs

• Crores