If your solution to stated problem does not match the given solution, you should self-critique per instructions at
http://vhcc2.vhcc.edu/dsmith/geninfo/labrynth_created_fall_05/levl1_22/levl2_81/file3_259.htm
Your solution, attempt at solution. If you are unable to attempt a solution,
give a phrase-by-phrase interpretation of the problem along with a statement of
what you do or do not understand about it.
This response should be given, based on the work you did in completing
the assignment, before you look at the given solution.
019. `query 19
Question: `q query 4.2.6 53812 in expanded form.
What is 53812 in expanded form?
Your solution:
Confidence Assessment:
Given Solution:
2 means 2 * 10^0
1 means 1 * 10^1
8 means 8 * 10^2
3 means 3 * 10^3
5 means 5 * 10^4
Thus the number 53812 means
(5*10^4)+(3*10^3)+(8*10^2)+(1*10^1)+(2*10^0).
Self-critique (if necessary):
Self-critique Rating:
Question: `q query 4.2.20 536 + 279 in expanded notation
Write 536 + 279 in expanded notation.
Your solution:
Confidence Assessment:
Given Solution:
`a** We write this sum as
5 * 10^2 + 3 * 10^1 + 6 * 10^0 +
2 * 10^2 + 7 * 10^1 + 9 * 10^0
______________________________
8 * 10^2 + 10* 10^1 + 15* 10^0. Since 10 * 10^1 = 10^2 we can write this as
9 * 10^2 + 0 * 10^1 + 15 * 10^0.
Since 15 * 10^0 = 10 * 10^0 + 5 * 10^0 = 10^1 + 5 * 10^0 we rewrite this as
9 * 10^2 + 1 * 10^1 + 5 * 10^0.
This result is expressed in our place-value system as
915. **
STUDENT QUESTION:
When adding the 6*10^0 and the 9*10^0 I
don’t carry the one like in regular math?
INSTRUCTOR RESPONSE:
We're not applying the rules for
addition as we all learned them in elementary school, but reasoning our results
out from the more basic perspective of a place-value system.
6 * 10^0 + 9 * 10^0 = 15 * 10^0.
15 * 10^0 means 10 * 10^0 + 5 * 10^0,
and since 10 * 10^0 = 10^1 we conclude that our original expression 15 * 10^0 is
equal to 1 * 10^1 + 5 * 10^0.
This is the reason you 'carry the 1'.
Self-critique (if necessary):
Self-critique Rating: