Vocabulary
Percent- a ratio of a number to 100, symbol %.
Estimate- to find a number close to an exact amount.
Examples
Percent is a ratio in which one of the two numbers being compared is always 100.
Percent means "per hundred".
28% means "28 parts out of 100 hundred parts".
To estimate a percent of something, you must imagine that thing being cut up into exactly 100 parts. For example, if you were to estimate the percent of the square that is covered by the shaded figure you would need to imagine the square being cut up into 100 pieces. Then you would need to count the number of pieces that are shaded to estimate the percent.
If you were to count carefully, you would find that this figure covers about 29 square units. This means the blob covers about 29% of the square.
http://www.mathvillage.info/node/98
Video Help
https://www.youtube.com/watch?v=RkZG2cuERQE
https://www.youtube.com/watch?v=SwEXnT1g3D8
https://www.youtube.com/watch?v=q-24xe2blVM
No comments:
Post a Comment