1. Rename 0.500 s a decimal hundredth amd a decimal tenth. How do you know they are equivalent fractions.
2. Explain why 0.455 is halfway between 0.45 and 0.46?
3. A thousandths grid is completely coloured in when 3 different decimals are shown. One decimal is double one of the others.
a) What could the 3 decimals be?
b) How do you know that tehre are many answers to part a)?
2006-09-27 12:55:05 · 6 answers · asked by Just_A_Person!! 2 in Science & Mathematics ➔ Mathematics
1. 0.500 equals 50/100 and 5/10. These can all be reduced to 1/2, so they are equivalent.
2. 0.45 = 450/1000, 0.46 = 460/1000. And 0.455 is 455/1000. You can easily show that 455 is halfway between 450 and 460, can't you?
3a. If three numbers fill up a thousandth grid, I assume that means they add up to 1 (split into thousandths). So possible answers are:
0.001 + 0.002 + 0.997
0.002 + 0.004 + 0.994
0.003 + 0.006 + 0.991
0.004 + 0.008 + 0.988
...
0.100 + 0.200 + 0.700
0.101 + 0.202 + 0.697
...
0.332 + 0.664 + 0.004
0.333 + 0.666 + 0.001
3b. Since they have only told you the relation between a couple numbers (one is double another), the third could be anything, so there are lots of answers.
2006-09-27 13:13:49 · answer #1 · answered by Puzzling 7 · 0⤊ 0⤋
1. Multiply .500 by 100 and by 10 to find that .500 = 50/100 and 5/10. You know that they are equivalent because they are both equal to the same thing (if a=b and a=c then b=c) and also because you can reduce both of them to 1/2.
2. Solve the following: .455 - .450 and .460 - .455. If the results are the same, it is halfway between the two.
3. x + 2x + y = 1.
3x + y = 1
Start with y = .001. Then 3x = .999 and x = .333 (so 2x = .666).
When y = .004, 3x = .996 and x = .332 (and 2x = .664).
When y = .007, 3x = .993 and x = .331 (and 2x = .662).
And so on, until...y = .997, x = .001 and 2x = .002.
y = 3w + .001 for w = {0 to .333} and x = (1-y) / 3
2006-09-27 20:09:56 · answer #2 · answered by TychaBrahe 7 · 0⤊ 0⤋
1) the fraction is 5/10 and 0.5 as the decimal and i/5 is equivalent to that.
2) Because when you use that decimal in like money you don't count the last number
3) I Don't now
2006-09-27 20:04:53 · answer #3 · answered by Anonymous · 0⤊ 0⤋
You need to be clearer in asking your questions, though the answer to #2 is pretty obvious.
2006-09-27 19:57:40 · answer #4 · answered by Anonymous · 0⤊ 0⤋
maybe u should study ur math book
2006-09-27 19:57:04 · answer #5 · answered by ACE 2 · 0⤊ 0⤋
shouldn't you be doing your own homework?
2006-09-27 19:59:16 · answer #6 · answered by me 4 · 0⤊ 0⤋