(the repeating .7 is when the seven has a line above the number; it will just go on and on forever like this: .777777777777777777777777 .
and why is one bigger than the other?
2007-01-07 16:02:07 · 13 answers · asked by annonymous 2 in Science & Mathematics ➔ Mathematics
.777777 repeating is larger. This is because .7 could be rewritten as .700000000000. You know that 777 is larger than 700. The same holds true even if the numbers are divided by 1000.
2007-01-07 16:05:18 · answer #1 · answered by Joy M 7 · 1⤊ 0⤋
Joy M's approach is the one that mathematicians take for more complicated cases.
In this case (just to make it sound more complicated than it really is), you could say:
0.7 = 7/10
0.77777... = 7/9
Let's use a common denominator (90)
7/10 * 9/9 = 63/90
(9/9 = 1; multiplying by 1 does not change the value; 63/90 = 0.7)
7/9 * 10/10 = 70/90
70 is greater than 63 therefore 7/9 is greater than 7/10
2007-01-08 00:11:22 · answer #2 · answered by Raymond 7 · 0⤊ 0⤋
.7 is actually .70000000000000000000000000....
the repeating .7 is .777777777777777777777777...
Starting with the second decimal place, .7 repeating is bigger so it is a bigger number.
2007-01-08 00:06:27 · answer #3 · answered by lions_mc 2 · 0⤊ 0⤋
repeating 7
because .7 is .7000000
and .7 with at bar is .7777777777777
a .07 repeated is the difference
2007-01-08 00:05:20 · answer #4 · answered by knexmaniac0607 2 · 0⤊ 0⤋
repeating is bigger
.7 = .7000000000000
2007-01-08 00:04:48 · answer #5 · answered by Anonymous · 0⤊ 0⤋
.7 = 7/10
Repeating .77777777777777777777... = 7/9
.7 = .70000000000000000000000000...
Subtracting .7 from repeating .7
= .077777777777777777777777777... = 7/90
2007-01-08 00:35:19 · answer #6 · answered by Northstar 7 · 0⤊ 0⤋
The .777777777 is bigger --- .7 = .70
2007-01-08 00:17:54 · answer #7 · answered by frenchy62 7 · 0⤊ 0⤋
The repeating .7 is bigger because you can add zeros to the end of .7 and it won't get bigger. .77777 is greater than .700000
2007-01-08 00:05:21 · answer #8 · answered by Anonymous · 0⤊ 0⤋
remember that all decimals are fractions, so .7 equals 7/10 or 70/100ths and .77 equals 77/100ths. You only need to match up the place value to know which number is greater. .77 > .70
2007-01-08 00:08:11 · answer #9 · answered by pasoftballmom 2 · 0⤊ 0⤋
.7777 is greater because .7 by itself can also written as .7000, so when you compare the repeatin .7777777 it is larger then just .7
2007-01-08 00:06:02 · answer #10 · answered by armoredviolence 2 · 0⤊ 0⤋