jhtgrefwds

Which number system is closed under both addition and multiplication?

What is the identity element for addition in the system of whole numbers?

Which of the following is an example of an irrational number?

Estimating and rounding off numbers are techniques primarily used to:

What is the purpose of 'compensating' when estimating calculations?

What is the definition of a common multiple of two or more numbers?

What is the purpose of prime factorization?

Which method is used to determine both the Highest Common Factor (HCF) and the Lowest Common Multiple (LCM) of two numbers?

If Moeneba collects apples at a rate of 5 apples per minute, how many apples does she collect in 15 minutes?

In a biscuit recipe, 5 parts of flour are mixed with 2 parts of oatmeal and 1 part of cocoa powder. What is the ratio of flour to oatmeal?

What formula is used to calculate average speed?

What is the difference between simple interest and compound interest?

Adding a negative number to a positive number is equivalent to:

What is the result of subtracting a negative number from a positive number?

According to the distributive property, what is the equivalent expression for $a(b + c)$?

What is the result of multiplying two negative integers?

What happens when a number is added to its additive inverse?

Which of the following statements is always true when (x) is a real number?

How does subtracting a negative number affect the original number?

What is the primary reason for the invention of negative numbers?

If $a$ is a positive number and $b$ is a negative number, which of the following is always negative?

What is the value of $(-1)^{-1}$?

What does $a^{-n}$ represent?

Based on the laws of exponents, what is the simplified form of $rac{a^5}{a^2}$?

A number in scientific notation is written as $3.2 imes 10^{-4}$. What is this number in decimal form?

Simplify the expression: $(2^3 imes 2^2) \div 2^4$.

If $a^m = a^n$, what must be true?

What is $5^0$?

Evaluate $(-3)^3$.

Given that $x$ is an integer and $x < 0$, which of the following expressions will always yield a positive result?

Solve for $x$: $2^{x+1} = 8$.

What is the value of $x$ if $5^x = rac{1}{25}$?

If the cost price of an item is $C$, and it is sold for $S$, where $S < C$, then there is a:

A journey is completed in two sections. The first section covers 120 km at an average speed of 60 km/h, and the second section covers 180 km at an average speed of 90 km/h. What is the total time for the journey?

Consider two numbers, $x$ and $y$. If $x$ is a positive integer and $y$ is a negative integer, which of the following expressions results in the largest value?

A store offers a 20% discount on all items. If a customer buys two items, one priced at $50 and another at $30, what is the total amount the customer will pay after the discount?

Determine which of the following numbers, when raised to any positive integer power, will always result in a number less than or equal to the original number?

Which number system includes both rational and irrational numbers?

What does 'prime factorization' involve?

If $a$ and $b$ are integers, which expression always results in an integer?

What is the result of adding an integer to its additive inverse?

According to the laws of exponents, what is the simplified form of $(a^3)^4$?

What is the value of $(-10)^0$?

What is the value of $x$ in the equation $3^{x} = 81$?

What is the main difference between simple interest and compound interest?

What is the result of the expression $5 - (-3)$?

Which expression is equivalent to $x(y - z)$ according to the distributive property?

What is the sign of the result when a positive integer is divided by a negative integer?

What is the value of $a^{-3}$?

What is the decimal form of the number $6.2 imes 10^{5}$?

If $b^x = b^y$ and $b \neq 0, 1, -1$, what can you conclude about $x$ and $y$?

The price of an item is marked up by 25%, but then it is sold at a 10% discount off the marked price. What is the overall percentage profit?

In scientific notation, which of the following represents 0.0000075?

If a store increases the price of an item by 15% and then decreases it by 10%, what is the net percentage change in the price?

If $x < 0$, which of the following expressions is always positive?

If the number 0.000047 is expressed in scientific notation as $4.7 \times 10^n$, what is the value of $n$?

Which of the following numbers is NOT a whole number?

What is the Highest Common Factor (HCF) of 24 and 36?

If the exchange rate is $1 = 0.85, how many euros would you get for $200, after a commission of 2% is deducted?

If a number $x$ is decreased by 20% and then increased by 25%, what is the net percentage change from the original value?

A car travels 240 km in 3 hours. If the car maintains the same average speed, how long will it take to travel an additional 320 km?

A retailer buys an item for $80 and marks it up by 40%. If they then offer a discount of 15% on the marked price, what is the final selling price?

Two cyclists start at the same point and travel in opposite directions. One cyclist travels at 20 km/h and the other at 25 km/h. How far apart are they after 2.5 hours?

What is the value of $x$ in the equation $\frac{2^x}{2^3} = 16$?

A jacket is priced at $120. If a customer has a coupon for 15% off and pays with a credit card that offers an additional 5% discount, what is the final price they pay?

John invests $5,000 in a simple interest account with an annual interest rate of 4%. How much interest will he earn after 3 years?

Consider the expression $x^2 + 2x + 1$. What is its value when $x = -1$?

If $f(x)=x^2-4x+3$, find $f(2)$.

If $f(x) = 3x^3 - 2x + 5$ and $g(x) = x^2 - x + 2$, what is the value of $(f+g)(1)$?

Which set of numbers includes 0 and all counting numbers?

Which of the following number systems is NOT always closed under subtraction?

Which number, when added to any whole number, leaves the whole number unchanged?

Which of the following correctly describes a key attribute of integers?

Which of the following numbers cannot be expressed as a fraction of two integers?

What set encompasses both rational and irrational numbers?

What is the primary goal when estimating calculations?

Why is 'compensating' important in estimation?

What are consecutive multiples of a number?

What is the Lowest Common Multiple (LCM) of two or more numbers?

How is the Highest Common Factor (HCF) determined using prime factorization?

If a mixture requires a ratio of 3 parts sand to 1 part cement, and you have 6 parts of sand, how much cement do you need?

A car travels 200 km in 4 hours. What formula would you use to find its average speed?

What financial concept involves paying a deposit followed by monthly installments?

Adding a negative number to a positive number is equivalent to which operation?

What is the result of multiplying a positive integer by a negative integer?

If a number is added to its additive inverse, what is the result?

What is the result of dividing a negative number by another negative number?

Express the number 56,700 in scientific notation.

Solve for $x$: $3^{x} = 27$.

Simplify: $\frac{5^6 \times 5^{-2}}{5^2}$

If $p$ and $q$ are integers such that $p < 0$ and $q > 0$, which expression is always negative?

What is the result of subtracting a negative number from another negative number?

If $x$ is a real number, which of the following is always non-negative?

Which expression is equivalent to $-(a - b)$?

Given the expression $(-1)^n$, under what condition will the result always be -1?

If $f(x) = x^2 - 3x + 2$, for what values of $x$ does $f(x) = 0$?

Let $a, b, c$ be integers such that $a + b + c = 0$. What is the minimum possible value of $a^2 + b^2 + c^2$ if at least one of $a, b, c$ is nonzero?