1. 1-2-4-8 Division By Mr. English Gold Ridge Elementary School Folsom, California

2. Step One What is our problem to solve. It is written below. _________ 37 ) 8 5 4 3 4

3. Step Two Write down '1x=' to the left of the divisor. Leave two spaces in between. _________ 1x = 37) 8 5 4 3 4

4. Step Three Write down '2x=' right below the '1x='. _________ 1x = 37) 8 5 4 3 4 2x =

5. Step Four Double the divisor and write it underneath - keeping the ones column lined up. Doubling 37 gets you 74. ___________ 1x = 37) 8 5 4 3 4 2x = 74

6. Step Five Write down '4x=' right below the '2x='. (It would be easy to write three X instead, but remember you are doubling. ______________ 1x = 37) 8 5 4 3 4 2x = 74 4x =

7. Step Six Double the divisor again and write it underneath - keeping the ones column lined up. Doubling 74 gets you 148. _________ 1x = 37) 8 5 4 3 4 2x = 74 4x = 148

8. Step Seven Write down '8x=' right below the '4x='. _________ 1x = 37) 8 5 4 3 4 2x = 74 4x = 148 8x =

9. Step Eight Double the divisor again and write it underneath - keeping the ones column lined up. Doubling 148 gets you 296. __________ 1x = 37) 8 5 4 3 4 2x = 74 4x = 148 8x = 296

10. Step Nine Look at the first two numbers in the dividend. They are “85”. Choose the number from the divisor column that is closest to 85 to write under the dividend. _________ 1x = 37) 8 5 4 3 4 2x = 74 7 4 4x = 148 8x = 296

11. Step Ten Fill in to the right with zeros. Say to yourself, "ZERO, ZERO, ZERO.” _________ 1x = 37) 8 5 4 3 4 2x = 74 7 4 0 0 0 4x = 148 8x = 296

12. Step Eleven Write the multiplier you used (1, 2, 4, or 8) on the right, followed by the same number of zeros you just wrote. Say to yourself, "ZERO, ZERO, ZERO.” _________ 1x = 37) 8 5 4 3 4 2x = 74 7 4 0 0 02000 4x = 148 8x = 296

13. Step Twelve Subtract. _________ 1x = 37) 8 5 4 3 4 2x = 74 – 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296

14. Step Thirteen Choose the best number from the divisor column to write under the dividend. Add enough 0’s to make sure your numbers align correctly. ________ 1x = 37) 8 5 4 3 4 2x = 74 – 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 0 7 4

15. Step Fourteen Fill in to the right with zeros. Say to yourself, "ZERO, ZERO.” _________ 1x = 37) 8 5 4 3 4 2x = 74 – 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 7 4 0 0

16. Step Fifteen Write the multiplier you used (1, 2, 4, or 8) on the right, followed by the same number of zeros you just wrote. Say to yourself, "ZERO, ZERO.” _________ 1x = 37) 8 5 4 3 4 2x = 74 – 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 0 7 4 0 0 2 0 0

17. Step Sixteen Subtract. _________ 1x = 37) 8 5 4 3 4 2x = 74 – 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 - 0 7 4 0 0 2 0 0 4 0 3 4

18. Step Seventeen Choose the best number from the divisor column to write under the dividend. Add enough 0’s to make sure your numbers align correctly. _________ 1x = 37) 8 5 4 3 4 2x = 74 – 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 - 7 4 0 0 2 0 0 4 0 3 4 3 7

19. Step Eighteen Fill in to the right with zeros. Say to yourself, "ZERO, ZERO.” _________ 1x = 37) 8 5 4 3 4 2x = 74 – 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 - 7 4 0 0 2 0 0 3 7 0 0

20. Step Nineteen Write the multiplier you used (1, 2, 4, or 8) on the right, followed by the same number of zeros you just wrote. ________ 1x = 37) 8 5 4 3 4 2x = 74 - 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 – 0 7 4 0 0 2 0 0 4 0 3 4 3 7 0 0 1 0 0

21. Step Twenty Subtract. ________ 1x = 37) 8 5 4 3 4 2x = 74 - 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 – 0 7 4 0 0 2 0 0 4 0 3 4 - 3 7 0 0 1 0 0 3 3 4

22. Step Twenty-One Choose the best number from the divisor column to write under what's left of the dividend. ________ 1x = 37) 8 5 4 3 4 2x = 74 - 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 – 0 7 4 0 0 2 0 0 4 0 3 4 - 3 7 0 0 1 0 0 3 3 4 2 9 6

23. Step Twenty-Two Write the multiplier you used (1, 2, 4, or 8) on the right. No need to write any zeros afterwards. ________ 1x = 37) 8 5 4 3 4 2x = 74 - 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 – 0 7 4 0 0 2 0 0 4 0 3 4 - 3 7 0 0 1 0 0 3 3 4 2 9 6 8

24. Step Twenty-Three Subtract. ________ 1x = 37) 8 5 4 3 4 2x = 74 - 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 – 0 7 4 0 0 2 0 0 4 0 3 4 - 3 7 0 0 1 0 0 3 3 4 - 2 9 6 8 3 8

25. Step Twenty-Four Choose the best number from the divisor column to write under what's left of the dividend. ________ 1x = 37) 8 5 4 3 4 2x = 74 - 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 – 0 7 4 0 0 2 0 0 4 0 3 4 - 3 7 0 0 1 0 0 3 3 4 - 2 9 6 8 3 8 3 7

26. Step Twenty-Five Write the multiplier you used (1, 2, 4, or 8) on the right. No need to write any zeros afterwards. ________ 1x = 37) 8 5 4 3 4 2x = 74 - 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 – 0 7 4 0 0 2 0 0 4 0 3 4 - 3 7 0 0 1 0 0 3 3 4 - 2 9 6 8 3 8 3 7 1

27. Step Twenty-Six Subtract. ==> Notice that the amount left over is less than the divisor - so you're done. ________ 1x = 37) 8 5 4 3 4 2x = 74 - 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 – 0 7 4 0 0 2 0 0 4 0 3 4 - 3 7 0 0 1 0 0 3 3 4 - 2 9 6 8 3 8 -3 7 1 1

28. Step Twenty-Seven Add up your answer on the right. The remainder is 1. ________ 1x = 37) 8 5 4 3 4 2x = 74 - 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 – 0 7 4 0 0 2 0 0 4 0 3 4 - 3 7 0 0 1 0 0 3 3 4 - 2 9 6 8 3 8 -3 7 + 1 1 2 3 0 9

29. Step Twenty-Eight Write the answer on the top. 2 3 0 9 R 1 1x = 37) 8 5 4 3 4 2x = 74 - 7 4 0 0 0 2 0 0 0 4x = 148 1 1 4 3 4 8x = 296 – 0 7 4 0 0 2 0 0 4 0 3 4 - 3 7 0 0 1 0 0 3 3 4 - 2 9 6 8 3 8 -3 7 + 1 1 2 3 0 9