Rounding

• Significant figures

  Rounding to one significant figure (the first non-zero number)
• Rounding to one significant figure

  • 521 = 500
• Rounding to two significant figures

  6845 = 7000

  10.652 = 11
• 0-7 are zero numbers
• Rounding to three significant figures

  4342 = 4300

  1312 = 1310

  0-1352 = 0.135

  34-861 = 34.9

  0-090487 = 0.0905

  220-312 = 220

  361235-7 = 361000