Math 208 Midterm UPDATED ACTUAL Exam Questions and CORRECT Answers
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Course
Math 208
Institution
Math 208
Math 208 Midterm UPDATED ACTUAL
Exam Questions and CORRECT Answers
The process of immediate recognition is called... - CORRECT ANSWER- subsidizing
why is one-to-one correspondence important? - CORRECT ANSWER- it allows us to
count a set of numbers one by one
what are two ways to think about ...
Math 208 Midterm UPDATED ACTUAL
Exam Questions and CORRECT Answers
The process of immediate recognition is called... - CORRECT ANSWER✔✔- subsidizing
why is one-to-one correspondence important? - CORRECT ANSWER✔✔- it allows us to
count a set of numbers one by one
what are two ways to think about counting numbers? - CORRECT ANSWER✔✔- as a list or
as telling "how many"
does every counting number have a unique predecessor? - CORRECT ANSWER✔✔- no
because 0 is not a counting number so the number 1 does not have a unique predecessor
explain how the digit "1" in the number 14 simultaneously has two meanings - CORRECT
ANSWER✔✔- This digit can be interpreted as either 1 group of ten objects or ten individual
objects
what is the key innovation of the base-ten system? - CORRECT ANSWER✔✔- that it uses
only numeric symbols 0,1,2,3,4,5,6,7,8,9 and place value to represent quantities
Are all whole numbers are counting numbers? explain - CORRECT ANSWER✔✔- no
because 0 is not a counting number, but all counting numbers are whole numbers
is 0 a counting number or a whole number or both? - CORRECT ANSWER✔✔- whole
number
are there are only 10 numbers between 2.5 and 2.6 on a number line? - CORRECT
ANSWER✔✔- no there are an infinite amount of numbers between each decimal
when comparing numbers on a number line which one is always bigger? - CORRECT
ANSWER✔✔- the number on the right is always greater
, When labeling a number line, Jason begins at 3.9 and labels the next 9 tick marks to the right
3.91, 3.92, 3.93, 3.94, 3.95, 3.96, 3.97, 3.98, and 3.99. What should the next number be? -
CORRECT ANSWER✔✔- 4.00
To round a number to a given place value means... - CORRECT ANSWER✔✔- to find the
closest number that has zeros in all smaller places
how do we compare sizes of numbers in base-ten? - CORRECT ANSWER✔✔- we compare
"like places", starting at the place of the largest value that has a non-zero entry
The distance between two cities is reported to be 2,900 miles. Is it likely that this
measurement has been rounded to the nearest hundred? Why? - CORRECT ANSWER✔✔-
yes, because the reported distance has zeros in the ones and tens places
how is 0 used in our place value system and provide an example - CORRECT ANSWER✔✔-
it is simply a place holder. for example, in the number 200, there is a two in the hundreds
place and 0s in the tens and ones place, but if we had the 2 by itself, it would not represent
200
why is the decimal point important on our place value system? - CORRECT ANSWER✔✔-
it allows us to represent a value smaller than a whole number
what are the most basic numbers and the starting point for children? - CORRECT
ANSWER✔✔- counting numbers
what is the cardinality of a set? - CORRECT ANSWER✔✔- the number of things in a set
why are number lines important? - CORRECT ANSWER✔✔- because they allow the
concept of numbers to be expanded as decimals, fractions, and negative numbers
what is the structure of the base ten system/how are they related? - CORRECT
ANSWER✔✔- the value of each place is ten times the value of the place to its right
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