CBSE  /  Class 8  /  Maths  /  Playing with Numbers

  • 1. 
    The generalised form of the number 52 is

  • 10 × 5 + 2
  • 100 × 5 + 2
  • 10 × 2 + 5
  • 10 × 5

  • 2. 
    The generalised form of the number 33 is

  • 10 × 3 + 3
  • 10 × 3
  • 3 + 3
  • 3 × 3 + 3

  • 3. 
    The number 10 × 7 + 5 in usual form is

  • 57
  • 75
  • 55
  • 77

  • 4. 
    The number 10 × 2 + 7 in usual form is

  • 72
  • 22
  • 77
  • 21

  • 5. 
    The generalised form of the number 123 is

  • 1 × 100 + 2 × 10 + 3
  • 2 × 100 + 3 × 10 + 1
  • 3 × 100 + 1 × 10 + 2
  • none of these

  • 6. 
    The generalised form of the number 234 is

  • 2 × 100 + 3 × 10 + 4
  • 3 × 100 + 4 × 10 + 2
  • 4 × 100 + 2 × 10 + 3
  • none of these

  • 7. 
    The number 3 × 100 + 4 × 10 + 5 in usual form is

  • 453
  • 435
  • 354
  • 345

  • 8. 
    The number 5 × 100 + 7 × 10 + 9 in usual form is

  • 795
  • 759
  • 579
  • 597

  • 9. 
    The number 100 × a + 10 × 6 + c in usual form is

  • abc
  • bca
  • cab
  • none of these

  • 10. 
    The number 100 × b + 10 × c + a in usual form is

  • bac
  • bca
  • cab
  • cba
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