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Rounding Numbers. PowerPoint Presentation
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Rounding Numbers.

Rounding Numbers.

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Rounding Numbers.

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  1. 7.2 6.3 7.8 6 8 7 Rounding Numbers. 67 890 = 68 000 2035 = 2040 8985 = 9000 6.89 = 6.9

  2. Rounded Numbers All Around You. Here are some examples of rounded numbers which could appear in newspaper headlines: 30 000 Watch Scotland Win Again. 500 000 March In War Protest. Man Leaves £2 Million To Charity.

  3. 6.5 6.7 6 8 7 Rounding To The Nearest Whole Number. 6.7 Consider the number : It is our task to decide if the number is closer to : 6 7 Look at the number line below: or Mark the number 6.5 6.5 is the midpoint between 6 and 7. Mark the number 6.7 Is 6.7 closer to 6 or 7 ? Is 6.7 above or below 6.5 ? Above 6.7 = 7 (to the nearest whole number)

  4. 24.3 24.5 24 26 25 Further Example. Round the following to the nearest whole number: (1) 24.3 What is the midpoint between 24 and 25 ? Is 24.3 above or below 24.5 ? Below. 24.3 = 24 (To the nearest whole number).

  5. What Goes In The Box ? Round the following to the nearest whole number: NB: always round 0.5 up . Ie 12.5 = 13 (to the nearest whole number). (1) 4.8 5 (6) 287.6 288 (2) 7.4 7 (7) 9.8 10 (3) 44.6 44 (8) 49.6 50 (4) 87.5 88 (9) 99.7 100 (5) 56.3 56 (10) 399.5 400