yuctoborian : sevenths
TRANSCRIPT
Decimal sevenths
14 28 57Note these numbers
Decimal sevenths
1/7 = 0. 14 28 57
Note these numbers 14 28 57
Decimal sevenths
1/7 = 0. 14 28 57 14 28 57
Note these numbers 14 28 57
Decimal sevenths
1/7 = 0. 14 28 57 14 28 57 14 28 57
Note these numbers 14 28 57
Decimal sevenths
1/7 = 0. 14 28 57 14 28 57 14 28 57 14 28 57 ...
Note these numbers 14 28 57
Decimal sevenths
1/7 = 0. 14 28 57 14 28 57 14 28 57 14 28 57 ...
Use the same string of numbers to generate the other sevenths.
14 28 57
Decimal sevenths
1/7 = 0. 14 28 57 14 28 57 14 28 57 14 28 57 ...
2/7 = 0. 285714 285714 285714 285714 285714 ...
Use the same string of numbers to generate the other sevenths.
14 28 57
Decimal sevenths
1/7 = 0. 14 28 57 14 28 57 14 28 57 14 28 57 ...
2/7 = 0. 285714 285714 285714 285714 285714 ...
3/7 = 0. 428571 428571 428571 428571 428571 ...
14 28 57
Decimal sevenths
1/7 = 0. 14 28 57 14 28 57 14 28 57 14 28 57 ...
2/7 = 0. 285714 285714 285714 285714 285714 ...
3/7 = 0. 428571 428571 428571 428571 428571 ...
4/7 = 0. 571428 571428 571428 571428 571428 ...
14 28 57
Decimal sevenths
1/7 = 0. 14 28 57 14 28 57 14 28 57 14 28 57 ...
2/7 = 0. 285714 285714 285714 285714 285714 ...
3/7 = 0. 428571 428571 428571 428571 428571 ...
4/7 = 0. 571428 571428 571428 571428 571428 ...
5/7 = 0. 714285 714285 714285 714285 714285 ...
14 28 57
Decimal sevenths
1/7 = 0. 14 28 57 14 28 57 14 28 57 14 28 57 ...
2/7 = 0. 285714 285714 285714 285714 285714 ...
3/7 = 0. 428571 428571 428571 428571 428571 ...
4/7 = 0. 571428 571428 571428 571428 571428 ...
5/7 = 0. 714285 714285 714285 714285 714285 ...
6/7 = 0. 857142 857142 857142 857142 857142 ...
14 28 57
Decimal sevenths
1/7 = ?
To know which digit to use at the start of any seventh, consider how big the fraction should be.
2/7 = ?
3/7 = ?
4/7 = ?
5/7 = ?
6/7 = ?
14 28 57
Decimal sevenths
Slightly less than half. Therefore sequence starts with a 4.
1/7 = ?
2/7 = ?
3/7 = 0. 4...
4/7 = ?
5/7 = ?
6/7 = ?
To know which digit to use at the start of any seventh, consider how big the fraction should be.
14 28 57
Decimal sevenths
Slightly more than half. Therefore sequence starts with a 5.
1/7 = ?
2/7 = ?
4/7 = 0. 5...
5/7 = ?
6/7 = ?
To know which digit to use at the start of any seventh, consider how big the fraction should be.
14 28 57
3/7 = 0. 428571 428571 428571 428571 428571 ...
Decimal sevenths
The highest seventh starts with the highest digit. Sequence must start with an 8.
1/7 = ?
2/7 = ?
5/7 = ?
6/7 = 0. 8...
To know which digit to use at the start of any seventh, consider how big the fraction should be.
14 28 57
4/7 = 0. 571428 571428 571428 571428 571428 ...
3/7 = 0. 428571 428571 428571 428571 428571 ...
Decimal sevenths
1/7 = ?
2/7 = ?
5/7 = ?
To know which digit to use at the start of any seventh, consider how big the fraction should be.
14 28 57
4/7 = 0. 571428 571428 571428 571428 571428 ...
3/7 = 0. 428571 428571 428571 428571 428571 ...
6/7 = 0. 857142 857142 857142 857142 857142 ...
Decimal sevenths
For practical use, approximate sevenths to the first 2 digits.
1/7 ~ 0. 14
2/7 ~ 0. 28
3/7 ~ 0. 42
4/7 ~ 0. 57
5/7 ~ 0. 71
6/7 ~ 0. 85
14 28 57
Decimal sevenths
e.g., 28% of $63
~ 2/7 of $63
= 2 x $9
= $18
(True answer = $17.64)
1/7 ~ 0. 14
2/7 ~ 0. 28
3/7 ~ 0. 42
4/7 ~ 0. 57
5/7 ~ 0. 71
6/7 ~ 0. 85
Decimal sevenths
e.g., 42% of $35
~ 3/7 of $35
= 3 x $5
= $15
(True answer = $14.70)
1/7 ~ 0. 14
2/7 ~ 0. 28
3/7 ~ 0. 42
4/7 ~ 0. 57
5/7 ~ 0. 71
6/7 ~ 0. 85
Decimal sevenths
572 ~ (4/7)2 x 1002
= 16/49 x 10,000
~ 32/100 x 10,000
= 3200
(True answer = 3249)
1/7 ~ 0. 14
2/7 ~ 0. 28
3/7 ~ 0. 42
4/7 ~ 0. 57
5/7 ~ 0. 71
6/7 ~ 0. 85
Decimal sevenths
400 ÷ 7 = 4/7 x 100
= 57.142857...
1/7 ~ 0. 14
2/7 ~ 0. 28
3/7 ~ 0. 42
4/7 ~ 0. 57
5/7 ~ 0. 71
6/7 ~ 0. 85
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