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Oak MathsTest · Maths

Inequality notation to express error

The starter and exit quiz of the lesson “Inequality notation to express error”, from the unit “Estimation and rounding” (Year 8 Maths) by Oak National Academy.

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Oak National Academy

12 questions

  1. Which of the following is not an integer?
  2. State the smallest and largest integers that round to 520 when rounded to the nearest 10.
  3. State the smallest and largest integers that round to 3900 when rounded to the nearest 100.
  4. When does 0.4999999 NOT round to give 0.5?
  5. Work out 3.4 km + 348 m + 6000 cm. Give your answer in metres.
  6. Work out 0.05 km + 6.32 m + 123 cm. Give your answer in centimetres.
  7. An error interval for a number x shows the range of possible values of x. It is written as:
  8. When a number is rounded to the nearest integer the result is 8. Identify the correct range for the unrounded number.
  9. When a number is rounded to the nearest integer the result is 19. Identify the correct range for the unrounded number.
  10. When a number, x, is rounded to the nearest integer the result is 8. Identify the error interval for x.
  11. When a number, x, is rounded to 2 significant figures the result is 7.8. Identify the error interval for x.
  12. A distance x km is given as 2.345 km correct to the nearest metre. Identify the error interval for x.

License: OGL

Inequality notation to express error · Examplary