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Number System worksheet-10

True of False :
 
  1. 365 + 0 = 3650
 
  1. 20 × 30 = 30 × 20
 
  1. 35 + 45 = 45 + 35
 
  1. 40 + (62 + 38) = 62 + (40 + 38)
 
  1. 7 × ( 10-3) = 7 × 10- 7 × 3
 
  1. 85 – 41 = 41 – 85
 
  1. 68 × (4 × 20) = 60 × ( 48 × 20)
 
  1. 100 – (10 – 5) = (100 – 10) – 5
 
  1. (100 + 10) + 5 = 100 + (10 + 5)
 
  1. The product of two irrational numbers is always an irrational number.
 
  1. The product of a rational number (not equal to 0) and an irrational number is always irrational.
 
  1. ‘1’ is neither prime nor composite.
 
  1. ‘2’ is the only even prime number.
 
  1. Number which are not prime are composite numbers
 
  1. ‘6’ is the smallest composite number.
 
  1. Consecutive numbers are always co-prime numbers.
 
  1. Sum of a rational number and an irrational number is always an irrational number.
 
  1. Sum, difference, product and quotient of two irrational numbers is always an irrational number.

 

Answer Key Worksheet

  1. False

  2. True

  3. True

  4. True

  5. True

  6. False

  7. False

  8. False

  9. True

  10. False

  11. True

  12. True

  13. True

  14. False

  15. False

  16. True

  17. True

  18. False