Pre-Algebra : Number Theory

Study concepts, example questions & explanations for Pre-Algebra

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Example Questions

Example Question #59 :High School Math

What type of number is?

Possible Answers:

None

Integer

Irrational

Fraction

Decimal

Correct answer:

Fraction

Explanation:

An integer is a whole number, either positive or negative. In other words, it is a number that can be written without a fractional or decimal part. Examples are:

is therefore not an integer, but it is a fraction.

Example Question #60 :High School Math

is an example of _____________.

Possible Answers:

a complex number

an integer

a decimal

an irrational number

a fraction

Correct answer:

an integer

Explanation:

An integer is any positive or negative whole number.

Therefore,is an integer.

Example Question #1 :How To Define Integers In Pre Algebra

Which of the following isnotan integer?

Possible Answers:

Correct answer:

Explanation:

Integers are all counting numbers, and include both和所有负面的自然数。因此,保持this definition in mind, we can see that the value which is not an integer issince it has digits after the decimal point.

Example Question #11 :Integers And Types Of Numbers

What do you get when you add two negative integers?

Possible Answers:

Sometimes negative

Always positive

zero

Sometimes positive

Always negative

Correct answer:

Always negative

Explanation:

When you add two negative numbers, the answer is always negative. When adding negative numbers, we treat as an addition problem but we need to add the negative sign afterwards. Two negative numbers can never add to zero.

Example Question #12 :Integers And Types Of Numbers

Which is a rational number?

Possible Answers:

Correct answer:

Explanation:

All the numbers are irrational numbers. They are basically numbers that can't be expressed as fractions. They dont have definite values.is an imaginary number that contains the letter.

Example Question #13 :Integers And Types Of Numbers

What is an integer?

Possible Answers:

Only positive numbers.

Only negative numbers.

A number that can either be positive, negative or zero and must be a whole number.

Just numbers from one to ten.

Any number.

Correct answer:

A number that can either be positive, negative or zero and must be a whole number.

Explanation:

An integer is a number that is whole and doesn't have a decimal or a fraction. The number can be positive, negative, or zero.

Example Question #14 :Integers And Types Of Numbers

Which of the following isNOTan integer?

Possible Answers:

Correct answer:

Explanation:

An integer is a number that has no decimals or fractions. They must be whole numbers whether positive, negative or zero.is an irrational number which means it doesn't have a definite value. All the other choices have definite value.

Example Question #15 :Integers And Types Of Numbers

What's a natural number?

Possible Answers:

Imaginary numbers

Positive integers only

Negative integers and zero

Negative integers only

Positive integers and zero

Correct answer:

Positive integers and zero

Explanation:

Natural numbers are numbers that occur naturally meaning they range from zero onwards. Negative numbers dont occur naturally.

Example Question #16 :Integers And Types Of Numbers

What are counting numbers?

Possible Answers:

Positive integers

Zero

Natural numbers

Negative integers

无理数s

Correct answer:

Positive integers

Explanation:

Counting numbers are numbers you can count with your hands. We start from one and onward. They are the same as positive integers.

Example Question #21 :Number Theory

What are prime numbers?

Possible Answers:

All fractional numbers

Numbers that have a factor of one and itself

Number with multiple factors besides one and itself

Negative integers that have a factor ofand itself

Trignometric functions

Correct answer:

Numbers that have a factor of one and itself

Explanation:

Example of prime numbers are. Their factors are one and itself. They are also positive integers.

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