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How is adding on number line different from subtracting on a number line?
Wiki User
∙ 12y ago
When subtracting, the number moves to the left (negative direction).
When adding, the number moves to the right (positive direction).
Wiki User
∙ 12y ago
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When subtracting a negative number why do you move to the right on the number line instead of the left?
Subtracting a negative number is the same as adding a positive number. Also, adding a negative number is the same as subtracting a positive number. -7 + (-5) = -7 - 5 = -12 -7 - (-5) = -7 + 5 = -2
What would happen if you didn't line up the decimal point will adding and subtracting?
You are more likely to make a mistake.
Why is it that when subtracting an integer gives the same result as adding the opposite?
Because of the definition of addition and subtraction. When looking at a real number line: when you add you move to the left or up, when you add the opposite of a number you move in the opposite direction.
What are 5 numbers that are not integers?
Integers include positive whole numbers, negative whole numbers, and zero.The "set of all integers" is often shown like this:Integers = {… -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, …} The dots at each end of the set mean that you can keep counting in either direction. The set can also be shown as a number line:The arrows on each end of the number line mean that you can keep counting in either direction.Adding and Subtracting IntegersLooking at a number line can help you when you need to add or subtract integers.Whether you are adding or subtracting two integers, start by using the number line to find the first number. Put your finger on it. Let's say the first number is 3.Then, if you are adding a positive number,move your finger to the right as many places as the value of that number. For example, if you are adding 4, move your finger 4 places to the right. 3 + 4 = 7If you are adding a negative number, move your finger to the left as many places as the value of that number. For example, if you are adding -4, move your finger 4 places to the left. 3 + -4 = -1If you are subtracting a positive number, move your finger to the left as many places as the value of that number. For example, if you are subtracting 4, move your finger 4 places to the left. 3 - 4 = -1If you are subtracting a negative number, move your finger to the right as many places as the value of that number. For example, if you are subtracting -4, move your finger 4 places to the right. 3 - -4 = 7Here are two rules to remember:Adding a negative number is just like subtracting a positive number. 3 + -4 = 3 - 4Subtracting a negative number is just like adding a positive number. The two negatives cancel out each other. 3 + 4 = 3 - -4
Why do you line up the decimal when adding or subtracting decimal numbers?
Yes, When Adding and Subtracting decimals you should line up the decimals. You need to keep each place value in the same column, the same as when you add whole numbers you keep the ones column lined up, same for the tens, etc. Lining up the decimal points makes sure that the tenths column is kept together, same for the hundredths, and so on.
What are the three rules of adding and subtracting decimals for 5 grade?
line up the decimal point when your adding and subtracting. add annex a zero when you have extra number. sometimes you can use a number line.
What is a negative subtracted by a negative?
Subtracting a negative number has the same effect as adding a positive number - think of it as moving right on a number line whereas, subtracting a positive number will move you left on a number line.
When subtracting a negative number why do you move to the right on the number line instead of the left?
Subtracting a negative number is the same as adding a positive number. Also, adding a negative number is the same as subtracting a positive number. -7 + (-5) = -7 - 5 = -12 -7 - (-5) = -7 + 5 = -2
Is adding -6 the same as subtracting 6 why or why not?
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Why can you subtract from a negative number?
Because numbers don't stop. Think of a number (positive or negative) as a point on a number line. You can move to the right by adding to it and to the left by subtracting from it.
When adding or subtracting decimals the decimal point must be in line for all numbers?
Yes.
When do you line up the decimal?
you only line the decimals up when you are subtracting or adding not when you are multiplying im not sure about division...
What is the rule in adding positive integers?
Adding IntegersTo 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 negative integer, it is like subtracting a positive number from a positive number. When adding two negative integers, it is like subtracting a positive number from a negative number.
How can you find the sum of a positive integer and a negative integer without using a number line?
Adding a negative number is just the same as subtracting a positive number. So 3 plus (-4) is the same as 3 minus 4. The answer to 3 - 4 is the inverse of the answer to 4 - 3 So if 4-3=1 then 3-4=-1 Other useful rules: Taking away a minus number is the same as adding a plus number. Subtracting a plus number, or adding a minus number, is the same as taking away a positive number.
What would happen if you didn't line up the decimal point will adding and subtracting?
You are more likely to make a mistake.
When adding and subtracting decimalshow can you be sure to add or subtract only digits that have the same place value?
You line the number up, vertically, so that the decimal points are one below the other.
3 numbers between 0.3 and 0.4?
0.31, 0.32, 0.33 Work: You could go on from the answer either subtracting from 0.4 or adding to 0.3, just go through the number line
