©THEBRIGHT EXAM SOLUTIONS
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ILTS Math 110 Exam Questions And
Answers 100% Pass
Problem-Solving Strategies - answer✔1. Guess and Check, with this problem solving strategy , make your
best guess, and then check the answer to see whether it's right. Even if the guess doesn't immediately
provide the solution, it may help to get you closer to it so that you can continue to work on it. An
example, 3 persons age add up to 72, and e ach person is one year older than the last person What are
their ages?
Because the three ages add up to 72, it is reasonable to take one third of 72 as your starting point. Of
course even though 24+24+24=72, those numbers don't match the info. So you might guess 24, 25, 26
which is a sum of 73. Then you might guess 23,24, 25. - answer✔
Problem solving strategies - answer✔1. Make a sketch or a picture, can help you clarify a problem.
Consider this problem, Mr. Rosenberg plans to put a four-foot concrete sidewalk around his backyard
pool. The pool is rectangular, with dimensions of 12 by 24. The cost of the concrete is 1.28 per square
foot. How much concrete is require for the job. Make a rectangle around the pool with 12 x 24 x 4. Solve
Problem solving strategies - answer✔3. Make a table or a chart
Problem solving strategies - answer✔4. Making a list, like making a table or chart, can help to organize
information and perhaps provide or at least hint at a solution. Consider this problem "How many
different outcomes are there if you roll two regular six-sided dice?
Problem solving strategies - answer✔Act it out.
Problem solving strats - answer✔Look for patterns. This technique encourages you to ask, "what's
happening here?" Spotting a pattern would be helpful in solving a problem such as, Nevin's weekly
savings account balance for 15 weeks are as follows, $125, $135, $ 148, $72, $85, $96, $105, $50, $64,
$74, $87, $42, $51, $60, $70, If the pattern holds, what might Nevin's balance be? Do an average.
Problem solving strat - answer✔7. Working a simpler problem. If you need to know the product of 23
and 184, you stimate 20x200.
Problem solving strat - answer✔8. Writing an open math sentence, sometimes called translating a
problem into mathematics. Consider this problem, Tianna earned 77,86,90,83 on her first four weekly
science quizzes. Assuming all grades are equally weighted what score will she need on the fifth week's
, ©THEBRIGHT EXAM SOLUTIONS
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quiz in order to average a score of 88. You could set up the problem like this 77+86+90+83+X/5=88.
Solve for X.
Problem solving strat - answer✔9. Consider working backward. If you add 12 to some number then
multiply the sum by 4, you will get 60. Start with the end number.
Mathematics is - answer✔a science of precision.
Hundreds v. Hundreths - answer✔Three hundred means 300 wheras three hundredths means 0.03.
Negative numbers - answer✔those less than zero. Fractions less than zero are negative too.
Absolute value of a number - answer✔can be thought of as its distance from zero on a number line.
Counting numbers - answer✔(1,2,3,4), zero is not a counting number,
Whole numbers are the counting numbers, plus 0 (0,1,2,3,4) - answer✔
Integers are - answer✔all of the qhole numbers and their negative counterparts (...-2,-1,0,1,2,....)Note
that negative and positive fractions are not considered integers (unless they are equivalent to whole
numbers or their negative counterparts).
Factors - answer✔are any of the numbers or symbols in mathematics that when ultiplied together form
a product. (the whole number factors of 12 are 1,2,3,4,6,12). A number with exactly two whole number
factors (1 and the number itself) is a prime number) the first few primes are 2,3,5,7,11,13, and 17/ Most
other whole numbers are composite numbers, because they are composed of several whole number
factors (1, is neither a prime or composite, it has only one whole number factor)
The multiples of any whole number are what are produced when the number is multiplied by counting
numbers. The multiples of 7 are 7,14, 21,28, and so on. Every whole number has an infinite number of
multiples. - answer✔
Decimal numbers - answer✔simply certain fractions written in special notation. All decimal numbers are
actually fractions whose demonimators are powers of 10 (10, 100, 1000) 0.033 for instance can be
though of as he fraction 33/1000.
There is an agreed upon order of operations - answer✔for simplifying complex expressions (PEMDAS).
Exponential notation - answer✔is a way to show repeated multiplication more simply. 2 x 2 x2 for
instance can be shown as 2 to the 3rd power and is equal to 8.
Scientific Notation - answer✔provides a method for showing numbers using exponents. Thus the
number of 75000 in scientific notation is 7.5 x 10 to the 4 power.
Addends (or addenda) - answer✔"parts of addition problems" When addends are combined they
produce sums. Likewise, factors can be seen as "parts of multiplication problems." When factors are
