Questions on Algebra: Decimal numbers, power of 10, rounding answered by real tutors!

Tutors Answer Your Questions about decimal-numbers (FREE)

Question 392827: express 0.00000068 in scientific notation
Click here to see answer by jsmallt9(3296)

Question 393478: Please help me solve this problem: What decimal is equal to 2/5? Please show work. My step son is just starting... Thanks!!
Click here to see answer by stanbon(57949)

Question 394320: Subtract 0.36 from 6.
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Question 394371: What Is 4.291 to the nearest tenth
Click here to see answer by jim_thompson5910(28699)

Question 394471: Multiply 0.8175 x 1,000
I must show the work and do not understand how to do this problem could someone please help me?
Click here to see answer by stanbon(57949)

Question 395034: I would like to know how to divide a negative number with a decimal.
example: - 64/0.8 = ?
Click here to see answer by stanbon(57949)

Question 395402: find the mixed or rational fraction in lowest terms represented by the repeating decimal. 1.363636?
Click here to see answer by stanbon(57949)

Question 395403: find the product of 7/9 x 1/8? show work were i can understand
Click here to see answer by stanbon(57949)

Question 395414: Divide. Express answer in simplest form.
2/5 4/5

4 ÷ -1

Click here to see answer by rfer(12726)

Question 395410:
Express the ratio in simplest form.

14 minutes to 5 hours

Click here to see answer by EricL(29)

Question 395979: I need help converting 8.3% to a decimal (round to the nearest tenth) and a fraction (reduced to its lowest terms?
Click here to see answer by Jstrasner(106)

Question 395997: can you please chow me the break down on how to subtract 390,000-8.3% please
Click here to see answer by Jstrasner(106)

Question 395997: can you please chow me the break down on how to subtract 390,000-8.3% please
Click here to see answer by unlockmath(1614)

Question 397522: is 0.6 greater than 0.61
Click here to see answer by Alan3354(31503)

Question 398105: Convert to decimal notation.

Simplify your answer.
Click here to see answer by richard1234(5390)

Question 398878: The United States emitted 19.5 million tons of nitrogen oxides (NO) into the atmosphere in 1987. One metric ton (1 t) equals 1,000 kg. How many kilograms of NO were emitted to the atmosphere in the United States during 1987? Could someone please show me how to do this equation?
Click here to see answer by josmiceli(9817)

Question 399869: based on speed, what is the average of 222.089mph, 221.991mph, 220.213mph? round to the nearest thousandth if necessary. I dont know the formula to solve
Click here to see answer by rfer(12726)

Question 402374: hi! can you please help me?
Click here to see answer by stanbon(57949)

Question 404689: trying to see if this is a mistake. 14.729x10 to the -3 power. How can this be rewritten? Is this as far as the notation can go?
Click here to see answer by richard1234(5390)

Question 404945: Convert 0.09% to a decimal.

Click here to see answer by Tatiana_Stebko(1326)

Question 405264: How do i write 13/40 as a decimal?
Click here to see answer by IWork4Dessert(60)

Question 405264: How do i write 13/40 as a decimal?
Click here to see answer by MathLover1(6805)

Question 405268: Write 1/10 as a decimal. Round to the nearest thousandth if necessary.
Click here to see answer by Edwin McCravy(8999)

Question 405265: Write 11/20 as a decimal WITHOUT DIVIDING.
Click here to see answer by Edwin McCravy(8999)

Question 405267: Convert the fraction 6/3 to a decimal. Round your answer to three (3) decimal places if necessary:
Click here to see answer by MathLover1(6805)

Question 405269: Write 8/9 as a decimal. Round to the nearest thousandth if necessary.
Click here to see answer by rfer(12726)

Question 405269: Write 8/9 as a decimal. Round to the nearest thousandth if necessary.
Click here to see answer by MathLover1(6805)

Question 405369: round 8523 to the tenth place
Click here to see answer by richard1234(5390)

Question 405442: A 30% salt solution is prepared by mixing a 20% salt solution and a 45% salt solution.how many litrs of each must be used to produce 60L of the 30% salt solution

Click here to see answer by robertb(4012)

Question 407108: what is -0.2 in exponential notation?
Click here to see answer by stanbon(57949)

Question 407079: round 39.621 to the nearest tenth.
Click here to see answer by ewatrrr(10682)

Question 407072: round 82,395.826 to the nearest whole number
Click here to see answer by ewatrrr(10682)

Question 407073: round 399,218 to the nearest ten thousand.
Click here to see answer by ewatrrr(10682)

Question 409565: Write each decimal as a fraction or mixed number.
0.65 5.035
I need help on changing decimal to fraction.
Click here to see answer by ewatrrr(10682)

Question 409565: Write each decimal as a fraction or mixed number.
0.65 5.035
I need help on changing decimal to fraction.
Click here to see answer by solver91311(17070)

Question 409565: Write each decimal as a fraction or mixed number.
0.65 5.035
I need help on changing decimal to fraction.
Click here to see answer by MathLover1(6805)

Question 409882: round 3.74 to the nearest tenth.
Click here to see answer by fractalier(2101)

Question 409881: write 15.014 words.
Click here to see answer by fractalier(2101)

Question 409880: label the place values for the number 191

Click here to see answer by fractalier(2101)

Question 411536: Explain why the product of a number with 3 digits after the decimal point and a number with 4 digits after the decimal point would have 7 digits after the decimal point.
Click here to see answer by Theo(3504)

Question 412310: I am working a problem of turning 4/32% into a decimal and rounding to the nearest thousandth. I know the math works out to 12.5% but were I get lost in getting to the answer which is .00125. How do I know how many place to move the decimal back?
Click here to see answer by Edwin McCravy(8999)

Question 415216: how do i round 1.219 to the nearest penny?
Click here to see answer by Alan3354(31503)

Question 415349: what is larger 1.07 or 1.8?
Click here to see answer by ewatrrr(10682)

Question 416486: You receive a penny on Jan 1, 2 cents the next day, 4 cents the next day and so on, doubling every day. How long will it take to be a millionaire?
Click here to see answer by Earlsdon(6294)

Question 417481: How do I factor .04r^2 + .12r+ .09 ?
Click here to see answer by jim_thompson5910(28699)

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