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Friday 19 October 2018

Rounding numbers to the nearest whole/tens

Rangi WALT - round numbers to the nearest whole number 17/09/18


  1. 2469. 491 = 2469.491 is between 2468 and 2470. Since I’m rounding up to the nearest whole numbers I look at the number in the tenths place to decide whether to round up or down. Because 4 is less than 5 I round up.
  2. 41,806.608 = 41,806.608 is between 41806 and 41807. Since i’m rounding up to the nearest whole numbers. I look at the numbers in the tenths place whether I need to round up or down. Because 6 is bigger the five I round up.  
  3. 219,411.099 = 219,411.099 is between 219,411 and 219,412. Since I need to round up to the nearest whole numbers I need to look at the numbers in the tenths place whether I need to round up or down. Because zero is less than 5 I round up.
  4. 658,414.584 = 658,414.584 is between 658,414 and 658,415 Since I’m rounding up to the nearest whole numbers I need to look at the numbers in the tenths place neither I need to round up or down. Because 6 is less than 5 I must round

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WALT - round numbers to the nearest tens.

  1. 2469.491 = 2469.491 is between 2460 and 2470. Since i’m rounding up to the nearest tens I would need to look in the ones place. Because 9 is bigger than 5 I will need to round up to 2470.
  2. 41,806.608 = 41,806.608 is between 41,810 and 41,820, Since i’m rounding up to the nearest tens I must look in the ones place. Because 6 is bigger than 5 I must round up to 41,820.
  3. 219,411.099 = 219,411.099 is between 219,410 and 219,420. As I need to round up to the nearest tens I need to look in the ones place. Because 1 is less than 5 I must round down to 219,410.
  4. 658,414.584 = 658,414.584 is between 658,410 and 658,420. Since i’m rounding up to the nearest tens I must look in the ones place. Because 4 is less than 5 I need to round down to 658,410.
  5. 3,605,435.85 = 3,605,435.85 is between 3,605,430 and 3,605,440. Since i’m rounding up to the nearest tens i must look at the ones place. If the number is 5 or less

1 comments:

Unknown said...

Hi Rangi, great rounding numbers explanation, you have put in major effort.

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