Rule:
Make this list of digit names (read downward)
H
U
N
D
R T
E E
D N
| |
T T T
M H H H H
I O O O U
L U U U N
L S S S D
I A A A R T O
O N N N E E N
N D D D D N E
S S S S S S S
| | | | | | |
582
tens
Write your number at the bottom so that the last
digit lines up in the ONES column:
H
U
N
D
R T
E E
D N
| |
T T T
M H H H H
I O O O U
L U U U N
L S S S D
I A A A R T O
O N N N E E N
N D D D D N E
S S S S S S S
| | | | | | |
5 8 2 to tens
Line through all the digits to the right of the
tens digit which is the 8:
5 8 2
Look at the first digit lined through.
If it is 5 or more, then add one to the last
digit not lined through. If it is less than
5, then skip this step.
The first digit lined through is a 2, which
is less than 5, so we skip this step
5 8 2
Now replace all the lined through digits by
zeros:
5 8 0
So the answer is 580.
------------
497,949
hundred thousands
Write your number at the bottom so that the last
digit lines up in the ONES column:
H
U
N
D
R T
E E
D N
| |
T T T
M H H H H
I O O O U
L U U U N
L S S S D
I A A A R T O
O N N N E E N
N D D D D N E
S S S S S S S
| | | | | | |
4 9 7 9 4 9 to hundred thousands
Line through all the digits to the right of the
hundred thousand digit which is the first 4:
4 9 7 9 4 9
Look at the first digit lined through.
If it is 5 or more, then add one to the last
digit not lined through. If it is less than
5, then skip this step.
The first digit lined through is a 9, which
is 5 or more, so we add one to the first 4,
making it 5:
5 9 7 9 4 9
Now replace all the lined through digits by
zeros:
5 0 0 0 0 0
So the answer is 500,000
------------------------------
6,097,597
ten thousands
H
U
N
D
R T
E E
D N
| |
T T T
M H H H H
I O O O U
L U U U N
L S S S D
I A A A R T O
O N N N E E N
N D D D D N E
S S S S S S S
| | | | | | |
6 0 9 7 5 9 7 to ten thousands
Line through all the digits to the right of the
ten thousand digit which is the first 9:
6 0 9 7 5 9 7
Look at the first digit lined through.
If it is 5 or more, then add one to the last
digit not lined through. If it is less than
5, then skip this step.
The first digit lined through is a 7, which
is 5 or more, so we add one to the first 9,
making it 10. However, since 10 is a two
digit number, we carry 1 to the digit before,
which is 0, making it 1, and replace the 9 by
zero:
6 1 0 7 5 9 7
Now replace all the lined through digits by
zeros:
6 1 0 0 0 0 0
So the answer is 6,100,000
---------------------------
155,680
hundred thousands
Write your number at the bottom so that the last
digit lines up in the ONES column:
H
U
N
D
R T
E E
D N
| |
T T T
M H H H H
I O O O U
L U U U N
L S S S D
I A A A R T O
O N N N E E N
N D D D D N E
S S S S S S S
| | | | | | |
1 5 5 6 8 0 to hundred thousands
Line through all the digits to the right of the
hundred thousand digit which is the 1:
1 5 5 6 8 0
Look at the first digit lined through.
If it is 5 or more, then add one to the last
digit not lined through. If it is less than
5, then skip this step.
The first digit lined through is a 5 which
is 5 or more, so we add one to the last digit
not lined through, making it 2
2 5 5 6 8 0
Now replace all the lined through digits by
zeros:
2 0 0 0 0 0
So the answer is 200,000
------------------------------
Edwin