Sunday, January 16, 2011

Final Percent Post

What is a percent? A percent is a way to show a number out of 100. You can use the sign '%' to show percent. Examples: 50%, it is also equal to 50/100 as a fraction or 0.5 as a decimal.

In our recent unit on percent, we learned how to represent percents in different ways, convert them into decimals and fractions, how to calculate the percent of a number, and how to combine percents.

Representing Percents:
- To represent a percent, you can shade squares on a grid of 100 squares called a hundred grid. One completely shaded grid represents 100%.


- To represent a percent greater than 100%, shade more than one grid.

-To represent a fractional percent between 0% and 1%, shade part of one square.

- To represent a fractional percent greater than 1%, shade squares from a hundred grid to show the whole number and part of one square from the grid to show the fraction.

Fractions, Decimals, Percents:
- Fractions, decimals, and percents can be used to represent numbers in various situations.

- Percents can be written as fractions and as decimals.

Percent of a Number:

- You can use mental math strategies such as halving, doubling, and dividing by ten to find the percents of some numbers.

- To calculate the percent of a number, write the percent as a decimal and then multiply by the number.

Combining Percents:
- Percents can be combined by adding to solve problems. 5% + 7% = 12% .

- To calculate the increase in a number,

  • You can add the combined percent to the original number. 12% of 100 = 0.12 x 100 = 12
  • You can multiply the original number by a single percent greater than 100. 112% of 100 = 1.12 x 100 = 112

- Percents of percents can be used to determine amounts that result from consecutive percent increases or decreases.

Here is my video about percents.

Here is a link to my percent scribe post:

Here is a link that goes to a website that has more information on percents.:

1 comment:

  1. Olivia, I like the way how you labelled things and that you gave pictures and examples. The pictures looked sort of rushed, you should take your time more because it sort of looked messy. You should add some color to it so it doesn't get boring to the eye, other than that great job!