Learning Library

# Tic-Tac-Toe Percents

### What You Need:

• 1 sheet white paper
• 1 marker
• 1 friend
• 1 ruler
• Calculator

### What You Do:

1. Using the ruler and the marker, help your child draw 10 horizontal (side to side) lines on the paper. Make sure she draws them as evenly spaced as possible and that they stretch the width of the paper.
2. Then, still using the marker and the ruler, help her draw 10 vertical lines on the paper, on top of the horizontal lines. Make sure she draws them as evenly spaced as possible and that they stretch the full length of the paper.
3. You should end up with a total of 100 empty boxes.
4. Then, give her the marker and encourage her to write the corresponding decimal and fraction for each box.
5. For instance, the first box would have .01 and 1/100 written in it, the twelfth box would have .12 and 12/100 written in it, the 25th box would .25 and 25/100 written in it.
6. To play the game, your child and her friend should take turns.
7. The first person must use their calculator to convert both the fraction and decimal in any box of their choosing to percentages (To convert the fraction to percent, divide the top of the fraction by the bottom, then multiply the result by 100. To convert decimal to percent, move the decimal point two places to the right and add a percent sign %.)
8. If they correctly convert both the fraction and the decimal to a percent, they get to put either an X or an O in the square.
9. After the first player is done, the second player should take his turn.
10. The first player to hit 10 squares in a row is the winner.

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