Division For Third Graders

1
Division For Third Graders

• By Donald Barr

2
Introduction

• Division occurs in math when one number is
  divided or broken up by another number.
• For example, if there are 20 students equally
  spread out on 4 softball teams and you want to
  figure out how many students are on each team you
  would do the operation 20 divided by 4 to figure
  out how many students would be on each team.
• The division problem 18 divided by 3 equals 6 can
  be shown in a number of ways, but is most
  commonly shown in the ways below
• 18/36
• 1836
• Even though the three forms of 18 divided by 3
  equals 6 look different, they are all exactly the
  same.

3

• There are special names for each part in a
  division problem. The first number or the number
  being divided is known as the divisor. The second
  number is the dividend. The third number, or
  answer to the problem is known as the quotient.
• 18 3 6
• In the problem above
• 18 is the Divided
• 3 is the Divisor
• 6 is the Quotient

4

• One method that can be used for solving division
  problems is placing grouping method.
• For example, 183 can be represented by breaking
  the number 18 into as many groups of 3 as
  possible.
• Break up the 18 suns by circling groups of 3. How
  many groups do you have?
• Answer 6

5

• Another method to solve division problems is
  known as the repeated subtraction method. The
  answer is 6 because we had to subtract 3 from 18
  exactly 6 times to get 0.

6

• The common method to solving division problems
  that have a two or more digit dividend, is long
  division. The problem below is an example of how
  to do a long division problem.
• For this problem we will be using the example
  problem of 42 7.
• 1. Place the divisor (7) before the division
  bracket and place the dividend (42) under it.
• 2. Examine the first digit of the dividend(4). It
  is smaller than 7 so it can't be divided by 7 to
  produce a whole number. Next take the first two
  digits of the dividend (42) and determine how
  many 7's it contains. In this case 42 holds six
  sevens (6742). Place the 6 above the division
  bracket.

7

• 3. Multiply the 6 by 7 and place the result (42)
  below the 42 of the dividend.
• 4. Draw a line under the 42 and subtract it from
  42 (42-420). Since the result is 0 the division
  is finished and 6 is the answer.

8
Resources

• Division Game
• Division Worksheet
• Division Help
• More Division Help