How to do Long DivisionPart One

(Dirty Monkeys Smell)

Mnemonic – memory aid

• Dirty: Divide

• Monkeys: Multiply

• Smell: Subtract

Vocabulary Wordsfor the parts of the problem

quotient remainder

divisor dividend

product

Step One -- Divide

Look at the problem.Decide how many times

the divisor can go into the dividend without going over.

“Twenty-three can be divided into two equal groups of eight with some left over.”

Think:

How many times can 8 go into 23 without going over?

28 23

Step Two – Multiply

Multiply the divisor by the quotient.

Write your answer under the dividend.

Think: 2 x 8 = 16

2

8 23

16

Step Three – Subtract

Subtract the product from the dividend.

If the answer is less than the divisor, it becomes your remainder.

Think: 23 – 16 = 7

Seven is less than 8, so it becomes your remainder.

2 R 7

8 23

16

7

Review first three steps

• Dirty – divide the dividend by the divisor.

• Monkeys – multiply the quotient by the divisor and write the answer under the dividend.

• Smell – subtract the product from the dividend.

Your turn

• Divide the dividend by the divisor.

6 25

(How many equal groups of six can you create out of twenty-five?)

Your turn

• Multiply the divisor by the quotient. Write the answer under the dividend.

4

6 25

(What’s 6 x 4?)

Your turn

• Subtract the product from the dividend.• If the answer is less than the divisor it

becomes the remainder. 4

6 2524

(What is 25 – 24?)

Check your work

4 R 1

6 25

24

1

(Did you get it right?)