1 / 11

Rounding Whole Numbers

Rounding Whole Numbers. September 8, 2009. Steps for rounding. Find the rounding place value. Example: Round to the nearest ten-thousand. 23,584. Look to the digit to the right of this place value. Which number is to the right of the ten-thousand place value? 23,584.

azize
Download Presentation

Rounding Whole Numbers

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Rounding Whole Numbers September 8, 2009

  2. Steps for rounding • Find the rounding place value. Example: Round to the nearest ten-thousand. 23,584

  3. Look to the digit to the right of this place value. Which number is to the right of the ten-thousand place value? 23,584

  4. If the digit is 5 or greater than add 1 to the rounding digit. If the digit is less than 5, leave the rounding digit alone. Which one will I do here? 23,584

  5. Change all digits to the right of the rounding number to zeros.

  6. Practice • Round each number to the underlined place value. 3,101,922 45,699,825 895,774 6,498,555

  7. Answers 3,101,922 3,101,900 45,699,825 45,700,000 895,774 895,770 6,498,555 6,499,000

  8. More practice Write three numbers that would round to 72,000,000 when rounded to the nearest million.

  9. Answers vary 72,000,000 • If you want to keep the number 72 million he place value to the right of the 2, which is RED can only be 0,1,2,3,4. The of the numbers to the right of the hundred thousand place value can be anything. Examples: 72,199,999; 72,258,698; 72,444,444 71,000,000 • If you to round 71 million up to 72 million than the number to the right of the 1, which is in BLUE can only be 5,6,7,8,9. The of the numbers to the right of hundred thousand place value can be anything. Examples: 71,999,999; 71,555,555; 71,795,846

  10. Mixed Review Order the following numbers from least to greatest? 9,781; 9,178; 917; 9,187; 8,971 Which of the following is not true? • 13=1x1x1 b) 33=27 c) Three squared is 9. d) 52=5x2

  11. Homework Pg. 4 in Math Workbook

More Related