Chapter Review

Identify which of the following numbers are prime, composite, or neither:
201, 34, 17, 1, 37.

Find the prime factorization of 500.

Find the greatest common divisor of 80 and 340.

Find the greatest common divisor of 30, 40, and 70.

Find the least common multiple of 45 and 60.

Bella and JJ volunteer at the zoo. Bella volunteers every 8 days, while JJ volunteers every 14 days. How many days pass between days they volunteer together?

Identify all the integers in the following list: $\text{−4},\frac{2}{7},\text{15},\text{97.5},\text{0},\sqrt{122}$.

Plot the following on the same number line:
$1,5,-2,0$.

What two numbers have absolute value of 18?

Calculate $14-<!--\; -\; -->(-<!--\; -\; -->12)$.

Calculate $(-<!--\; -\; -->19)\times <!--\; \times \; -->4$.

Calculate $(-<!--\; -\; -->240)÷<!--\; ÷\; -->(-<!--\; -\; -->12)$.

Six students rent a house together. The total monthly rent (including heat and electricity) is $3,120. If they all pay an equal amount, how much does each student pay?

Calculate $5\times <!--\; \times \; -->3-<!--\; -\; -->(-<!--\; -\; -->12)$.

Calculate $4^2\times <!--\; \times \; -->6+2^3$.

$(4-<!--\; -\; -->6)\times <!--\; \times \; -->2$

$(8-<!--\; -\; -->1{)}^3\text{− 3}\times <!--\; \times \; -->9$

$120-<!--\; -\; -->(51+12)÷<!--\; ÷\; -->3^2$

Reduce $\frac{90}{153}$ to lowest terms.

Convert $\frac{430}{25}$ to a mixed number and reduce to lowest terms.

Convert $\frac{9}{5}$ to decimal form.

Convert $\frac{5}{11}$ to decimal form.

Calculate $\frac{4}{15}+\frac{9}{10}$ and reduce to lowest terms.

Compute $\frac{3}{10}÷<!--\; ÷\; -->\frac{12}{25}$ and reduce to lowest terms.

Determine 30% of 400.

18 is what percent of 40?

In Professor Finnegan’s Science Fiction course, there are 60 students. Of those, 15% say they’ve read A Hitchhiker’s Guide to the Galaxy. How many of the students have read that book?

Simplify the square root by expressing it in lowest terms: $\sqrt{275}$.

Calculate $4\sqrt{13}-<!--\; -\; -->15\sqrt{13}$ without a calculator. If not possible, explain why.

Calculate $\left(2.3\sqrt{5}\right)\times <!--\; \times \; -->\left(4.2\sqrt{3}\right)$ without a calculator. If not possible, explain why.

Rationalize the denominator of $\frac{6}{\sqrt{22}}$, and simplify the fraction.

Find the conjugate of $4\sqrt{7}+3$ and find the product of $4\sqrt{7}+3$ and its conjugate.

Rationalize the denominator of $\frac{3}{8+\sqrt{34}}$ and simplify the fraction.

Identify the numbers of the following list as a natural number, an integer, a rational number, or a real number: $\sqrt{37}$, −0.43, 18, −43, $12\mathrm{\pi <!--\; \pi \; -->}$.

Identify the property of real numbers illustrated here: $14+19=19+14$.

Identify the property of real numbers illustrated here: $87.4+0=87.4$.

Identify the property of real numbers illustrated here: $2\times <!--\; \times \; -->(\sqrt{31}-<!--\; -\; -->12)=2\sqrt{31}-<!--\; -\; -->2\times <!--\; \times \; -->12$.

Identify the property of real numbers illustrated here: $98\times <!--\; \times \; -->41=41\times <!--\; \times \; -->98$.

Use mental math to calculate $21\times <!--\; \times \; -->99$.

Determine 74 modulo 9.

Use clock arithmetic to calculate $13+25$.

Use clock arithmetic to calculate $4\times <!--\; \times \; -->8$.

It is Wednesday. What day of the week will it be in 44 days?

It is 4:00. What time will it be in 100 hours?

Security guards with Acuriguard submit a report on campus activity every 4 days. If they make a report on a Monday, what day of the week will it be after 10 more reports?

Use exponent rules to simplify ${17}^8\times <!--\; \times \; -->{17}^3$.

Use exponent rules to simplify $\frac{{15}^9}{{15}^{-<!--\; -\; -->5}}$.

Use exponent rules to simplify $(3k{)}^6$.

Use exponent rules to simplify ${\left(\frac{y}{4}\right)}^{11}$.

Use exponent rules to simplify ${\left({51}^3\right)}^6$.

Use exponent rules to simplify ${\left(\frac{3x^4}{5}\right)}^7$.

Rewrite $\frac{5^2}{x^4}$ without a denominator.

Rewrite $16z^{-<!--\; -\; -->9}$ without negative exponents.

Convert $0.0000452$ to scientific notation.

Convert $3.01\times <!--\; \times \; -->{10}^5$ to standard notation.

Convert $42.9\times <!--\; \times \; -->{10}^{-<!--\; -\; -->9}$ to scientific notation.

Calculate $4.51\times <!--\; \times \; -->{10}^5-<!--\; -\; -->9.11\times <!--\; \times \; -->{10}^4$.

Calculate $\left(9.15\times <!--\; \times \; -->{10}^3\right)÷<!--\; ÷\; -->\left(3\times <!--\; \times \; -->{10}^8\right)$.

The Sextans Dwarf Spheroidal Galaxy has diameter 8,400 light years (ly). Express this in Scientific notation.

The Reticulum II Galaxy has diameter $3.78\times <!--\; \times \; -->{10}^2$ light years (ly), while the Andromeda Galaxy has a diameter of $2\times <!--\; \times \; -->{10}^5$. How many times bigger is the Andromeda Galaxy compared to the Reticulum II Galaxy?

Determine the common difference of the following sequence: {19, 13, 7, 1, -5, …}.

Find the 25th term, $a_{25}$, of the arithmetic sequence with $a_1=13$ and $d=1.7$.

Find the first term and the common difference of the arithmetic sequence with 8th term $b_8=50$ and 15th term $b_{15}=106$.

Find the sum of the first 30 terms, $s_{30}$, for the arithmetic sequence with first term $a_1=-<!--\; -\; -->4$ and common difference $d=3.5$.

Jem makes a stack of 5 pennies. Each day, Jem adds three pennies to the stack. How many pennies are in the stack after 10 days?

Determine the common ratio of the following geometric sequence: {6, 18, 54, 162, …}.

Find the 6th term, $c_6$, of the geometric sequence with $c_1=400$ and $r=0.25$.

Find the sum of the first 12 terms, $s_{12}$, for the geometric sequence with first term $a_1=-<!--\; -\; -->4$ and common ratio $r=-<!--\; -\; -->1.25$.

Carolann and Tyler deposit $8,500 in an account bearing 5.5% interest compounded yearly. If they do not deposit any more money in that account, how much will be in the account after 15 years?

The total number of ebooks sold in 2013 was 242 million ($a_1=242$). Each year, the number of ebooks sold has declined by 3% ($r=0.97$). How many ebooks were sold between 2013 and 2022?