Maths

• Sarah is the youngest person to sail around the world solo.
• What is the standard form of 4600?

  1. 6 x 10³
• What is the standard form of 15000?

  1. 5 x 10⁴
• What is the standard form of 186000?

  1. 86 x 10⁵
• How is 4 million expressed in standard form?

  4 x 10⁶
• How is 70 million expressed in standard form?

  7 x 10⁷
• What is the ordinary number for 4.5 x 10³?

  4500
• What is the ordinary number for 8.1 x 10⁴?

  81000
• What is the ordinary number for 6.11 x 10⁵?

  611000
• What is the ordinary number for 1.3 x 10⁶?

  1300000
• What is the value of x in the equation 16000 = 1.6 x 10^x?


  4
• What is the value of x in the equation 30000 = 3 x 10^x?

  4
• What is the value of x in the equation 6 x 10⁴ = x?

  60000
• What is the value of x in the equation 5.11 x 10⁵ = x?


  511000
• What is the wording for 6.1 x 10³?

  Six thousand one hundred
• What is the wording for 5.11 x 10⁴?


  Fifty-one thousand one hundred
• What is the wording for 400 x 10²?


  Four thousand
• What is the wording for 70 x 10⁴?

  Seven hundred thousand
• What is the wording for 800 x 10³?

  Eight hundred thousand
• What is the wording for 16 x 10⁵?

  One million six hundred thousand
• What is the distance of Mercury from the sun in standard form?

  1. 8 x 10⁷ km
• What is the ordinary number for the distance of Neptune from the sun, which is 4.5 x 10⁹ km?

  4500000000
• What is the standard form for the estimated number of bacteria on the average human body, which is 3.8 x 10¹³?


  1. 8 x 10¹³
• Is it proper that 2 x 10⁴ is greater than 2 x 10³? Explain why.


  Yes, because 10⁴ is greater than 10³
• What is the wording for 5.1 x 10³?

  Five thousand one hundred
• What is the wording for 4.1 x 10⁴?

  Forty-one thousand
• What is the wording for 6.11 x 10⁵?

  Six hundred eleven thousand
• What is the wording for 1.2 x 10⁶?

  One million two hundred thousand
• What are the standard forms for the following numbers: 10,000, 15,000, 100,000, 150,000, 1,000,000, and 1,500,000?

  • 10,000 = 1 x 10⁴
  • 15,000 = 1.5 x 10⁴
  • 100,000 = 1 x 10⁵
  • 150,000 = 1.5 x 10⁵
  • 1,000,000 = 1 x 10⁶
  • 1,500,000 = 1.5 x 10⁶
• What are the standard forms for the following numbers: 50,000, 500,000, 12,000, 1,200,000, 75,000, and 750,000?

  • 50,000 = 5 x 10⁴
  • 500,000 = 5 x 10⁵
  • 12,000 = 1.2 x 10⁴
  • 1,200,000 = 1.2 x 10⁶
  • 75,000 = 7.5 x 10⁴
  • 750,000 = 7.5 x 10⁵
• What are the standard forms for the following numbers: million, 10 million, 100 million, 1 billion, 10 billion, and 100 billion?

  • million = 1 x 10⁶
  • 10 million = 1 x 10⁷
  • 100 million = 1 x 10⁸
  • 1 billion = 1 x 10⁹
  • 10 billion = 1 x 10¹⁰
  • 100 billion = 1 x 10¹¹
• What are the standard forms for the following numbers using Whitney's reasoning: 20 x 10³, 200 x 10³, 20 x 10⁴, 200 x 10⁴, 20 x 10⁵, and 200 x 10⁵?

  • 20 x 10³ = 2 x 10⁴
  • 200 x 10³ = 2 x 10⁵
  • 20 x 10⁴ = 2 x 10⁵
  • 200 x 10⁴ = 2 x 10⁶
  • 20 x 10⁵ = 2 x 10⁶
  • 200 x 10⁵ = 2 x 10⁷