This Math quiz is called 'Integers - Working with Negative Numbers' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.
It costs only $12.50 per month to play this quiz and over 3,500 others that help you with your school work. You can subscribe on the page at Join Us
This quiz focuses on negative numbers (or integers) which are those less than zero.
Integers are whole numbers. This means any number that is not a decimal or a fraction. For example: the number “25” is an integer but the number “1/2” is not because it is a fraction, nor is “.01” because it is a decimal.
There are two kinds of integers - positive and negative. A positive number is any number with a value of 0 and up. A negative number is a number with a value of less than “0.”
For example, let’s look at the following problem:
17 - 19 = ?
As 19 is a number that is greater than (>) 17 our answer will bring us below the number of “0”. To show that a number is less than “0” a minus symbol “-” is used in front of the integer. So in revisiting the above problem, the answer would look like this:
17 - 19 = -2
The “-2” is a negative integer.
When adding a positive integer with a negative integer it is the same thing as subtracting them. For example: 8 + (-6) = is rewritten as 8 - 6 = 2. To show that an integer is a negative number in a math problem it is surrounded by parentheses.
When subtracting negative integers it is the same thing as adding them. For example 10 - (-5) = is rewritten as 10 + 5 = 15.
When adding a negative integer with another negative integer it is the same as adding positive integers. For example: (-30) + (-20) = 30 + 20 = 50. The minus symbol “-” is then placed before the answer so the answer is -50.
Two like signs become a positive (“-” “-” = “+”)
Two unlike signs become a negative (“-” “+” = “-” and “+” “-” = “-”)