one seventh is about 14 percent
DESCRIPTION
1/7 is about 14% - To find 14% divide by 7. The reason: 7*14 = 98 (which is almost 100) Learnist Board: http://bit.ly/13AGhZq More information at http://bit.ly/ZXLw0I #P19TRANSCRIPT
1/7 is about 14 %
To find 14% of a number divide by 7.
By Jim Olsen, W.I.U.#P19
114%
7
1
7
5
7
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7 7
7
6
7
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7
3
70
7
0% 14% 28% 42% 58% 72% 100%86% 114%
8
7
Find the percent
1. 10 oz. is what percent of 70 oz.?
2. 600 points out of 700 possible is what percent?
600 686%
700 7
10 114%
70 7
Recall the strategy:To find A% of BYou can change the percent to a fraction,Find B divided by the bottom, thenMultiply by the top.
Find 28% of 22
2 2128% of 21 21 2 3 2 6
7 7
Here’s one that looks hard, but is quite easy if you know the strategy!
Find the number
1. Find 14% of 280.
2. Find 114% of 42.
3. Find 72% of 770.
1(14%) (280) of 280 (280 7) 40
7
1114% of 42 100% of 42 + 42 42 6 48
7
5 77072% of 770 of 770 *5 110*5 550
7 7
Examples:
1. If 1 in seven students are in choir, what percent arein choir?
2. If 42% of the students played in intramurals and there are 7000 students, how many played in intramurals ?
3. If the shampoo bottle has 14% FREE, and it normally has 28 ounces, how many ounces are in the bottle?
342% 7000 7000 3000
7
1114% of 28 100% of 28 28 28 4 32 ounces
7
114%
7
Closing Notes
Remember
1/7 is about 14% To find 14% of a number divide by
7.
#P19
RecapHere are the percents we know so far.
Fraction Percent1/2 50 %1/3 33⅓ %1/4 25 %1/5 20 %1/6 16⅔ %1/7 14 % *1/8 12½ % 1/9 11 % *
*approximate