How Do You Do It?

Up Division Quiz

The following is an example that shows how to do Estimation Division for the problem 727 / 3.

1. First write the problem as shown.x2.jpg (68685 bytes)

2. Draw a line down the side.x2.jpg (68685 bytes)

3. Beginning with multiples of 10, estimate how many times 3 goes into 727 without going over.

x2.jpg (68685 bytes)4. Write the number of times that you multiply 3 to the side of the line down the right side of the problem. [Write in the 100.]

 

x2.jpg (68685 bytes)5. Multiply 3 X 100 and subtract that from 727.

 

 

 

x2.jpg (68685 bytes)6. Again beginning with multiples of 10, estimate how many times you can divide 427 by 3.

7. Multiply 3 X 100 and subtract that from 427.

x2.jpg (68685 bytes)8. Again beginning with multiples of 10, estimate how many times you can divide 127 by 3.

9. Multiply 3 X 40 and subtract that from 127.

10. Estimate how many times you can divide 7 by 3.x3.jpg (69287 bytes)

11. Multiply 3 X 2 and subtract that from 7.x3.jpg (69287 bytes)

12. Add all the numbers along the right side which should be 100,100,40 and 2.

13.Write that number down below the right side line.

x3.jpg (69287 bytes)14. Since there is still 1 remaining on the left side, your answer should be 242 with a remainder of 1.