# Why do you use subtraction when you add a positive integer and a negative integer?

Because adding a negative is the same as subtracting a positive. In other words, minus a plus is he same as plus a minus. For example

5+ (-3) = 5-3 = +2

5 -(+3) = 5-3 = +2

Remember

minus a plus = = minus

plus a minus = minus

plus a plus = plus

minus a minus = plus

Because by definition, adding a negative integer is the same as subtracting its positive counterpart.

### What is -2 plus -1?

When adding two negative integers, add them just like they are positive integers, then add a negative sign. We have 2+1=3, so the answer is -3. Adding a positive integer to a larger negative integer is a little harder. For example, -10+3=-7 because, when adding a negative integer to a smaller positive integer, we subtract just like the smaller integer is negative (10-3=7), then we add a negative sign: -7.

### How can you predict the sign of the sum of a positive and a negative integer before you add the numbers?

If the absolute value of the positive integer is greater than the absolute value of the negative integer, then the sum of the two will be positive. If the absolute value of the positive integer is less than the absolute value of the negative integer, then the sum will be negative. If the absolute values of the two integers are the same then the sum will be zero, which has neither a negative nor a…

### How is a negative integer less then any positive integer?

Because positive numbers are to the right of negative numbers on the number line. If you have two numbers, one the negative of the other, and you add the positive to the negative, you get zero. If you add the positive to zero, you get a positive number. So positive numbers are an increase from zero, which is an increase from negative numbers. A negative number may have a greater absolute value than a positive…

### What is rule of addition of integers?

Rule: The sum of two negative integers is a negative integer. Rule: The sum of two positive integers is a positive integer. Procedure: To add a positive and a negative integer (or a negative and a positive integer), follow these steps: 1. Find the absolute value of each integer. 2. Subtract the smaller number from the larger number you get in Step 1. 3. The result from Step 2 takes the sign of the integer…

### How would you add together a negative integer and a positive integer?

Think of a number line with 0 in the middle. A negative integer (-3) makes you go back 3 on the number line. Now if you add a positive integer (2) you go forward two integers, landing on -1. If you are adding two negatives, the negatives cancel out and you get a positive number. In math, two wrongs make a right!

### What is the rule in adding positive integers?

Adding Integers To add integers, one must consider the following two rules to be a successful. If you want to think of it on the number line you start from 0 and when you add a positive number you go that much to the right, and when you add a negative number you go that much to the left. When adding two positive integers, just add like normal. When adding one positive integer, and one…

### Ordering integers on the number line?

adding integers on a number line we can show addition of whole numbers on a number line. to add a negative integer move to the left. (in negative direction) we can use patternes to add integers. to add a positive integer move to the right. (the positive direction) if you want to show the middle piont(zero) dont show a negative sign(-) nor a positive sign(+). it will just be a zero 0.

### How do you add and subtract integers with opposite signs?

You would use the reverse operation for a negative integer being added or subtracted. To add a negative integer, subtract its absolute value (positive value). Example : 4 + (-3) = 4 - (3) = 1 To subtract a negative integer, add its absolute (positive) value. Example : 4 - (-2) = 4 + 2 = 6 Beginning with a negative, adding a negative increases the negative value. Example : (-4) + (-3) = -7…

### What is the sign for multiplication and addition?

If you multiply two numbers, the result will be positive, if both factors are positive, or if both are negative. Multiplying a positive number by a negative number, or a negative number by a positive number, results in a negative result. For addition, if you add two positive numbers, the result is positive. If you add two negative numbers, the result is negative. If you add a positive and a negative number, the result depends…

### What are the rules for adding positive and negative numbers?

If you are adding a positive number, then this is the same as normal addition. For instance, 4 add positive 5 is 9. negative 1 add positive 8 is 7. If you are adding a negative number, then this is the same as subtracting that number. For instance 6 add negative 1 is 5. negative 7 add negative 2 is negative 9.

### Why is it when you add negative and negative it equals a positive and negative and positive equals a negative?

Use a number line to image this. Subtraction means "switch directions". ..._-2_-1_0_+1_+2_... Adding a negative is the same as subtracting. You switch directions on the number line. -1 + -1 = -2 is the same as -1 - 1 = -2. Adding negative numbers only makes the answer more negative. If you add a positive close to zero and a negative far from zero you get a negative. If you add a positive far from…

### Rules for adding integers?

When you add: a negative and a negative: you get a negative a positive and a positive: you get a positive a positive and a negative or a negative and a positive: Subtract the addend with the smaller value from the greater one. If the greater one is positive, your answer will be positive. If the greater addend is negative, your answer will be negative.

### Is it positive or negative answer if there is a negative plus a positive?

It depends. No matter what, you subtract the two quantities. If the absolute value of the positive integer is greater than the absolute value of the negative integer, your answer is positive. If the absolute value of the negative integer is greater than the absolute value of the positive integer, your answer is negative. For example: -32+11 is -21, because the absolute value of -32 is greater than the absolute value of 11, and 32…

### How do you solve integer math problems?

If you're adding: Ex. -3 + 15 (-3, -2, -1, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15) = 12 If you're subtraction: Ex. -17 - 20 (add the opposite, so problem really equals 17+20) = 37 If you're multiplying: Ex. 5 x -10 (one negative equals negative answer. both positive or negative equals positive answer.) = -50 If you're dividing: Ex. -100/10 (same rules as multiplication) = -10

### When you add two integers how do you know if the answer is positive or negative?

If they both start out with the same sign (both negative or both positive), then do this: . . . . . add their two values . . . . . the answer has the same sign as the two original integers. -- If they start out with opposite signs (one negative and one positive), then do this: . . . . . forget about the signs . . . . . find their…

### How do you add and subtract negative decimals?

The same way you'd add any other negative numbers. Adding a negative is the same as subtracting, and subtracting a negative is the same as adding. (-2) + (-2) = (-4) (-2) - (-2) = 0 you are wrong if you add or subtract two negitives its always a positive dont you know your math. And the second problem you have is wrong to because when you subtract two negitives you change the sign of…