Math work help? grade 8.?
Here are the sums:
1. a) 10 pesos = .909198 U.S. dollars. Use estimation and rounding to find out how many US dollars equal 200 pesos. b) How many pesos approximately are 4 US dollars.
2. Large fresh salad $4.43
Shrimp tomato cocktail $7.39
hot dog and fries $13.86
vanilla cheese-cake $6.97
cola $2.24:
(from a math story so sorry if it sounds a bit confusing to read) Do a rough estimate to find out how much it will all cost by rounding to the ones place and adding the amounts. You then decide you want to be a bit more precise, so you round to the tenths place and find the sum of these amounts. What is the difference between the two estimations?
3. Translate the facts he gave you from scientific form to standard notation.
1) The population: 1.07 x 108
2) Species of Reptiles: 7.07 x 102
3) Mass of one grain of sand: 2.4 x 10-3 grams
4. Take these fractions, write them in their simplest form, then come up with three equivalent fractions for each.
88/100, 24/30 and 55/88
5. Write 211 four different ways using exponents. Make sure at least one of your answers includes a negative sign and one of your answers should involve multiplying exponents.
How much did the trip cost?
NOTE: I JUST REALLY WANT TO KNOW HOW TO WORK THEM OUT, CAUSE MY BOOK ISN'T VERY CLEAR AND I WANT TO UNDERSTAND THEM AND NOT TAKE THE ANSWERS FROM HERE WITHOUT UNDERSTANDING THEM AND DOING THE WORKING OUT MYSLEF ON MY ACTUAL WORK. I DON'T WANT TO CHEAT SO IF YOU PUT THE ANSWERS DOWN PLEASE EXPLAIN HOW TO DO THE SUM FOR ME SO I CAN LEARN AND UNDERSTAND IN TIME FOR MY TEST IN 3 WEEKS. THANKS!
Here are the sums:
1. a) 10 pesos = .909198 U.S. dollars. Use estimation and rounding to find out how many US dollars equal 200 pesos. b) How many pesos approximately are 4 US dollars.
2. Large fresh salad $4.43
Shrimp tomato cocktail $7.39
hot dog and fries $13.86
vanilla cheese-cake $6.97
cola $2.24:
(from a math story so sorry if it sounds a bit confusing to read) Do a rough estimate to find out how much it will all cost by rounding to the ones place and adding the amounts. You then decide you want to be a bit more precise, so you round to the tenths place and find the sum of these amounts. What is the difference between the two estimations?
3. Translate the facts he gave you from scientific form to standard notation.
1) The population: 1.07 x 108
2) Species of Reptiles: 7.07 x 102
3) Mass of one grain of sand: 2.4 x 10-3 grams
4. Take these fractions, write them in their simplest form, then come up with three equivalent fractions for each.
88/100, 24/30 and 55/88
5. Write 211 four different ways using exponents. Make sure at least one of your answers includes a negative sign and one of your answers should involve multiplying exponents.
How much did the trip cost?
NOTE: I JUST REALLY WANT TO KNOW HOW TO WORK THEM OUT, CAUSE MY BOOK ISN'T VERY CLEAR AND I WANT TO UNDERSTAND THEM AND NOT TAKE THE ANSWERS FROM HERE WITHOUT UNDERSTANDING THEM AND DOING THE WORKING OUT MYSLEF ON MY ACTUAL WORK. I DON'T WANT TO CHEAT SO IF YOU PUT THE ANSWERS DOWN PLEASE EXPLAIN HOW TO DO THE SUM FOR ME SO I CAN LEARN AND UNDERSTAND IN TIME FOR MY TEST IN 3 WEEKS. THANKS!
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Well, first let's round the numbers
10 pesos will be rounded to 1 dollar
so 200 pesos in dollars would be the division of 200 by 10 and that is 20 US dollars. Because each 10 pesos are 1 USD
4 dollars to pesos are 4x10 = 40. Because aeach dollar is 10 pesos.
10 pesos will be rounded to 1 dollar
so 200 pesos in dollars would be the division of 200 by 10 and that is 20 US dollars. Because each 10 pesos are 1 USD
4 dollars to pesos are 4x10 = 40. Because aeach dollar is 10 pesos.
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keywords: ESTIMATING,SOLVING,MATH,ETC,ROUNDING,AND,PROBLEM,HELP,GRADE,PLZ,MATH GRADE 8 PROBLEM SOLVING HELP PLZ??? ESTIMATING AND ROUNDING ETC.