Thursday, October 14, 2010

8-1 Division with Remainders


*Note: you can solve these on a seperate sheet of paper. You might find yourself running out of room on the homework sheet.
**Note: #17-22 involve double digit multiplication. We have not learned this skill yet. You may skip it if you'd like, or you can use a calculator to solve it.

Oh yes, that dreaded division. :)

We have to know our multiplication facts in order to do this properly.

Step by Step of the above problem. We are solving 10 divided by 3. Sing your three's until you get as close to 10 as possible without going over. 3, 6, 9. We stop there because if we kept going the next number would have been 12, and that's too much. So we write a 3 on top and a 9 underneath. You will then subtract the 10 and 9, giving you 1. Now you can't sing your three's until you get to 1, that's just silly. You now have the answer, 3 with a remainder of 1.

Let's try some on the homework.

#1) 56 divided by 6.

Sing your 6's until you get as close to 56 as you can. 6, 12, 18, 24, 30, 36, 42, 48, 54. We stop there because if we kept going the next number would have been 60, and that's too big. Write a 9 on top and a 54 underneath. Subtract 56 and 54. You will get 2. Now you can't count by 6's until you get to 2, that's just silly. So you'll have that 2 as a remainder. Your answer 9 r2


No comments: