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WGU D126 Mathematics for Elementary Educators II EXAM QUESTIONS WITH COMPLETE SOLUTIONS.
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WGU D126 Mathematics for Elementary Educators II EXAM QUESTIONS WITH COMPLETE SOLUTIONS.
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WGU D126 Mathematics for ElementaryEducators II EXAM QUESTIONS WITH COMPLETE SOLUTIONS.
There are approximately 2 lbs of muscle for every 3 lbs of body weight of a certain animal. For a 66-lb
animal, how much of the weight is muscle? Answer- 66 Divided by 3 x 2 = 44
Robert weighs 160 lb on Earth and 352lbs on another planet. Find Jeremy's weight on that planet if he weights 180lbs on Earth. Answer- Times 180 x 352 = 63360 then
divide by 160 the answer is 396
There are six adult divers to each teenage driver in a city. If there are 14,832 adult drivers how many teenage drivers are there? Answer- 14,832 divided by 6 = 2472
On a city map a rectangular park has a length of 2 in. If the actual length and width of the part are 400 ft and 100 ft, respectively how wide is the park on the map? Answer- 2 times 100 = 200 divide 200 by 400 = 1/2
On a map 1/2 in represents 4 miles if two cities are 18 inches apart on the map what is the actual distance between them? Answer- 8 miles = 1 inch 8 miles times 18 inches = 144
If a certain recipe takes 1 1/4 c sugar and 4 c milk how much milk should be added if
the cook only has 1 cup sugar? Answer- 4 divided by 1 1/4 = 3 1/5
Vonna scored 48 goals in her soccer practice. If her success to failure rate was 3:2 how many times did she attempt a goal? Answer- Times the failure rate of 2 x 48 goals kicked = 96 then divide by the number of successes 96/3 = 32 then add total goals kicked 32 +48 = 80
Subtract when dividing Answer- Square roots top and bottom higher number on top, lower number on bottom
2 1/2 is to 6 as x is to 18 Answer- 2 1/2 x 18 = 45 then divide by 6 = 7 1/2
6 over 7 = 3x over 42 Answer- 7x3x = 21x then 6x42 = 252 then divide by 21 = 12
rational number Answer- any number that can be written as a fraction
irrational numbers Answer- numbers that cannot be expressed in the form a/b, where a and b are integers and b =0. Intergers Answer- whole numbers and their opposites
terminating decimal Answer- a decimal whose digits end and the prime factorization of the denominator contains no primes other then 2 or 5
Decimals from Greatest to Least Answer- write them all out in a row add 0's to make
them all have the same decimal places, put them in order by decimal places. Negatives are backwards
Fraction to a Decimal Answer- Use F-D key on the calculator
3.36 with line over the 36 Answer- convert to 336.36 then subtract 3.36 from that and place it over 99 so = 333 over 99, then reduce to lowest terms
Order from greatest to least with line over the repeating numbers Answer- no line, one line over last number, line over 3 numbers, line over 2 numbers
Order from greatest to least negative numbers with line over repeating numbers Answer- Same order as when they are positive numbers no line, one line over last number, line over 3 numbers, line over 2 numbers
522.16 Rounded to the nearest hundred Answer- 500
522.16 Rounded to the nearest tenth Answer- 522.2
522.16 rounded to the nearest unit Answer- 522
Rounding numbers Answer- left side is dreds, right side is dths
A baseball player gets 14 hits in 40 at bats, what percent of the at bats are hits? Answer- Divide 14 by 40 = 35%
102 is 60% of what number? Answer- Change the 60% to 0.6 and divide 102 by 0.6 = 170
98.0 is what percent of 24.5? Answer- 98 divided by 24.5 = 4 then 4 times 100 = 400%
68 is 40% of what number? Answer- change 40% to a decimal .4 then divide 68 by 4 = 170
A person collected $2,800 on a loan of $2,400 they made 5 years ago, if the person charged simple interest what was the rate of interest? Answer- 400-2,400xrx5 400=
2400 x 5 = 12000
Divide both sides by 400 x 12,000 = 0.0333
Change to a percent 0.0333 x 100 = 3.33
What is the square root of 28? Answer- find common denominators then leave the 2
on the right to find the answer 2 to the square root of 7 is the answer.
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