Algebra

Here are the powerpoint slides of the lesson presentation. You may download them to review the concepts covered. Number Chain Follow the directions of each number chain. See if you can use algebra to find out why this works.

Start with a two digit number. Multiply by 13 Add 222 Divide by 16 Multiply by 18 Divide by 9 Multiply by 56 Subtract 392 Divide by 126 Subtract 2. What do you get?

Start with a three digit number. Multiply by 3 Add 18 Multiply by 4 Subtract 6 Divide by 6 Multiply by 8 Add 8 Divide by 16 Subtract 6 How does your answer compare to your original number?

Start with a four digit number Double the number Add 10 Multiply by 2 Divide by 8 Multiply by 9 Add 189 Divide by 27 Subtract 12 How does your answer compare to your original number?

Which of these works for 5 digit numbers? How about 6 digit numbers?