Tuesday, January 26, 2010

Percent Scribe for January 26, 2010


5. a) 2/5% of 325 = 1.3
2/5% = 0.4%
First find 1% of 325. Do that by dividing 325 to 100 and you will get 3.25, then divide it again by 10 to get 0.1% (0.325) multiply 0.325 by 4. The answer is 1.3

b) 15 1/4% of 950 = 144.88
Find 10% of 950, 950÷ 10 = 95 (10%), divided it into half so 95 ÷ 2 = 47.5 (5%), 95 + 47.5 = 142.5.
950 ÷ 100 = 9.5 (1%) ÷ 4 = 2.375 (1/4%)
142.5 + 2.375 = 144.88

c) 175% of $125.50 = 219.63
100% is 125.50 ÷ 2 to get 50%.
125.50 ÷ 2 = 62.75 (50%) divide it into 2to get 25%
62.75 ÷ 2 = 31.375(25%)
125.50 + 62.75 + 31.375 = 219.63

6. a) 5/8 of 520 = 3.25
5/8 = (0.625)
520 ÷ 100 = 5.2 (1%) ÷ 2 = 2.6 (0.5%) ÷ 2 = 1.3 (0.25%) ÷ 2 = 0.65(0.125)
2.6 + 0.65 = 3.25

b) 75 2/5% of 200 = 150.8
divide 200 by 4 to get 25%! 200 ÷ 4 = 50(multiply 50 by 3) 50 x 3 = 150 (75%)
divide 200 by 100 to get 1%! 200 ÷ 100 = 2(1%) (divide by 10) 2 ÷10 = 0.2 (0.1) multiply by 4 to get 2/5%. 0.2 x 4 = 0.8
150 + 0.8 = 150.8

c) 250% of $76.50 = 191.25
Multiply 76.5 by 2. 76.5 x 2 = 153(200%)
divide 76.5 by 2. 76.5 ÷2 = 38.25

6 comments:

Jemineth873 January 26, 2010 at 9:49 PM  

Good job on your post , because of the tight space it looks confusing but as i read it , i was able to understand and get where your answer and explanation was going to . KEEP IT UP .

vicky873 January 27, 2010 at 6:03 PM  

Good job Allen. I couldnt find much mistakes. Everything was correct.

Camille873 January 27, 2010 at 6:19 PM  

good job allen ! you explained it very well.

hannah873 January 27, 2010 at 6:52 PM  

Good job. At least you actually took the effort to put a picture up.

Alexander8-73 January 31, 2010 at 7:45 PM  

Nice job Allen I like how you explained how you did it.

Abigail8-73 February 2, 2010 at 11:10 PM  

Good job Allen! (: I like how you keep the explanation brief and simple. I also like how you took time to put a picture. Good job again! (:

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