# Writing a division algorithm proof

Adding the 1 slice remaining, the result is 9 slices. We initially give each person one slice, so we give out 3 slices leaving. Intuitive example[ edit ] Suppose that a pie has 9 slices and they are to be divided evenly among 4 people.

Before the discovery of Hindu—Arabic numeral systemwhich was introduced in Europe during the 13th century by Fibonaccidivision was extremely difficult, and only the best mathematicians were able to do it.

It shifts gradually from the left to the right end of the dividend, subtracting the largest possible multiple of the divisor at each stage; the multiples become the digits of the quotient, and the final difference is the remainder.

Describe the distribution of 7 slices of pizza among 3 people using the concept of repeated subtraction. The theorem is frequently referred to as the division algorithm, although it is a theorem and not an algorithm, because its proof as given below also provides a simple division algorithm for computing q and r.

This proves the existence and also gives a simple division algorithm to compute the quotient and the remainder.

The resulting number is known as the remainderand the number of times that is subtracted is called the quotient. Short division is an abbreviated form of long division suitable for one-digit divisors.

Subtracting 5 from 21 repeatedly till we get a result between 0 and 5. In fact, the long division algorithm requires this notation.

We are now unable to give each person a slice. Divide 21 by 5 and find the remainder and quotient by repeated subtraction.

So, each person has received 2 slices, and there is 1 slice left. This will result in the quotient being negative.

This gives us At this point, we cannot subtract 5 again. Using Euclidean division, 9 divided by 4 is 2 with remainder 1. Please help improve this section by adding citations to reliable sources. If 9 slices were divided among 3 people instead of 4, each would receive 3 and no slices would be left over.Number Theory 1.

Integers and Division Divisibility. Definition Given two integers aand bwe say adivides bif there is an integer csuch that b= ac. If adivides b, we write ajb. If adoes not divide b, we Proof of Division Algorithm. Proof. Suppose aand dare integers, and d>0.

We will use the well-ordering principle to obtain the. We proved the Division Algorithm for using WOP. Here's an alternate proof using PMI, doing “induction on.” Stated more formally, we wantto prove.

In arithmetic, Euclidean division is the process of division of two integers, The theorem is frequently referred to as the division algorithm, although it is a theorem and not an algorithm, because its proof as given below also provides a simple division algorithm for computing q and r.

Division is not defined in the case where b = 0. The Division Algorithm is merely long division restated as an equation.

For example, the division 32 29 Thus, in the algorithm given as the proof of Theorem 3 below, we may always assume that Algorithm 2: Writing gcd(a;b) = ma+nb.

I can do it by induction, thanks to the wonderful people of this website, but I'm not sure how to do it by the Division algorithm. Can anyone help me? I think I can show how 3 divides 2n, but I'm not. The division algorithm is an algorithm in which given 2 integers.

Writing a division algorithm proof
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