All Common Core: 7th Grade Math Resources
Example Question #5 : Arithmetic
Simply the signs before solving. A positive sign multiplied with a negative sign will convert the sign to a negative, and a negative multiplied with a negative will convert the sign to a positive.
Example Question #226 : Grade 7
is equal to which of the following?
This is a straightforward problem. Remember that when adding a negative number, you are actually subtracting:
Be sure to remember that the first number is also negative, meaning we are subtracting a number from a negative number:
The answer is -6.25.
Example Question #2 : How To Add Fractions
The sum of two numbers of unlike sign is the difference of their absolute values, with the sign of the "dominant" number (the positive number here) affixed:
Subtract vertically by aligning the decimal points, making sure you append the 3.2 with a placeholder zero:
This is the correct choice.
Example Question #227 : Grade 7
When we add a negative number, the sign turns negative. Since we are adding two negative numbers, we treat this as an addition problem and add a minus sign in the end. .
Example Question #228 : Grade 7
When dealing with negative numbers, let's see which number is greater. is greater than and is negative so the answer is negative. We treat this as a subtraction problem. . Because our answer should be negative, the correct answer is .
Example Question #231 : Grade 7
Remember that adding a negative number is the same as subtracting that same number if it were positive.
Example Question #232 : Grade 7
Since is greater than and is positive, our answer is positive. We treat as a subtraction problem. Answer is .
Example Question #233 : Grade 7
When a plus and minus sign meet, the sign is negative. The difference is .
Example Question #234 : Grade 7
When a plus and a minus meet, the sign is negative. When adding two negatie numbers, we treat as addition and add the minus sign in the end. Answer is .
Example Question #267 : Operations And Properties
When a plus and minus sign meet, we have a minus sign.
Since is greater than and is negative, our answer is negative.
We treat as a normal subtraction.
Answer is .