Subtracting negative numbers Video transcript This is Steve and this is Steve's uncle and Steve is in a bit of a bind. Not only does he not have any money but he also owes Michael, who is not depicted here. So he actually has a negative net worth. Steve has a net worth of

Movement You are probably familiar with a number line see below. Traditionally, zero is placed in the center. Positive numbers extend to the right of zero and negative numbers extend to the left of zero.

In order to add positive and negative integers, we will imagine that we are moving along a number line.

If asked to add 4 and 3, we would start by moving to the number 4 on the number line -- exactly four units to the right of zero. Then we would move three units to the right. Since we landed up seven units to the right of zero as a result of these movements, the answer must be 7. If asked to add 8 and -2, we would start by moving eight units to the right of zero.

Then we would move two units left from there because negative numbers make us move to the left side of the number line. Since our last position is six units to the right of zero, the answer is 6. If asked to add and 4, we start by moving thirteen units to the left of zero.

Then we move four units to the right. Since we land up nine units to the left of zero, the answer is If asked to add -6 and -5, first move six units to the left of zero.

Then move five units further left. Since we are a total of eleven units left of zero, the answer is Here is a video that explains how to use a number line to add and subtract numbers.

Temperature The temperature model for adding integers is exactly the same as the movement model because most thermometers are really number lines that stand upright. The numbers can be thought of as temperature changes. Positive numbers make the temperature indicator rise. Negative numbers make the temperature indicator fall.

Adding two positive temperatures will result in a positive temperature, similar to example 1 above.How to Add and Subtract Positive and Negative Numbers Numbers Can be Positive or Negative. This is the Number Line.

Math skills practice site. Basic math, GED, algebra, geometry, statistics, trigonometry and calculus practice problems are available with instant feedback. How to Add and Subtract Positive and Negative Numbers Numbers Can be Positive or Negative.

This is the Number Line.

The positive integers are the numbers 1, 2, 3, (OEIS A), sometimes called the counting numbers or natural numbers, denoted Z^+. They are the solution to the simple linear recurrence equation a_n=a_(n-1)+1 with a_1=1.

A plot of the first few positive integers represented as a sequence of binary bits is shown above. The top portion shows S_1 to S_(), and the bottom shows the next. This page allows you to generate random integers using true randomness, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs.

The most primitive method of representing a natural number is to put down a mark for each object. Later, a set of objects could be tested for equality, excess or shortage, by striking out a mark and removing an object from the set.

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Integer - Wikipedia