1. How to do Long Division Part One
(Dirty Monkeys Smell)

2. Mnemonic – memory aid
Dirty: Divide
Monkeys: Multiply
Smell: Subtract

3. Vocabulary Words for the parts of the problem
quotient remainder
divisor dividend
product

4. 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? 2
8 23

5. Step Two – Multiply Multiply the divisor by the quotient.
Write your answer under the dividend.
Think: 2 x 8 = 16 2
8 23 16

6. 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 16 7

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.

8. Your turn Divide the dividend by the divisor. 6 25
6 25
(How many equal groups of six can you create out of twenty-five?)

9. Your turn
Multiply the divisor by the quotient. Write the answer under the dividend. 4
6 25
(What’s 6 x 4?)

10. Your turn Subtract the product from the dividend.
If the answer is less than the divisor it becomes the remainder. 4
6 25 24
(What is 25 – 24?)

11. Check your work
4 R 1
6 25 24 1
(Did you get it right?)