Math Review Semester 1

What is a decimal?

• A way of representing fractions using a point to separate the whole number from the fractional part.

• A method of calculating percentages without using fractions.

• A type of number that can only be whole numbers.

• A representation of numbers in binary format.

What is the least common multiple (LCM)?

• The largest multiple that two or more numbers share.

• The smallest multiple that two or more numbers share.

• The sum of the two numbers multiplied together.

• The difference between the two numbers multiplied together.

When decimals are divided by powers of ten, the digits move to the _________, which means the decimal moves to the __________.

• right; left.

• left; right.

• up; down.

• down; up.

What is the formula for finding the perimeter of a rectangle?

• Perimeter = length + width

• Perimeter = 2(length + width)

• Perimeter = 2(length - width)

• Perimeter = length * width

What is the formula for finding the area of a rectangle?

• Area = length + width.

• Area = length x width.

• Area = length / width.

• Area = length - width.

What do you need to add and subtract fractions?

• Common denominators.

• Different numerators.

• Similar denominators.

• Whole numbers.

What is a fraction?

• A fraction is a whole number.

• A fraction represents a part of a whole and is written as @@\frac{a}{b}@@, where 'a' is the numerator and 'b' is the denominator.

• A fraction is a type of decimal number.

• A fraction is a mathematical operation involving addition.

What is the greatest common factor (GCF)?

• The smallest number that divides two or more numbers without leaving a remainder.

• The largest number that divides two or more numbers without leaving a remainder.

• The sum of two or more numbers.

• The product of two or more numbers.

What does it mean to simplify a fraction?

• To reduce a fraction to its simplest form by dividing the numerator and denominator by their GCF.

• To multiply the numerator and denominator by the same number.

• To add the numerator and denominator together.

• To convert the fraction into a decimal.

What is a power of ten?

• A number that can be expressed as 10 raised to an exponent, such as 10^2 = 100.

• A number that is a multiple of ten, such as 20 or 30.

• A number that is less than ten, such as 5 or 7.

• A number that can be divided by ten without a remainder, such as 30 or 50.