Spiraling Decimals

In math's today we were playing a game called Spiraling Decimals. On the sheet you could chose what decimal you want to put on the spiral. You each get a turn of putting decimals on the spiral. To win you need to get 3 in a row you could ither choose a circle to be your mark or a line. Mine was a circle and my friends mark was a line.

The hardest part about this activity was getting 3 in a row because it really easy to block your opponents decimal because that's what my friend done to me. In the end I won 1 and he won 1

The easy part was estimating where the decimal land on the spiral, because you could start at the start and go around the spiral counting in 5s or 100s if you're got a big decimal.

For me I dident know a stratige because I just learnt the game I just really put it in random places and tried to block my friend from getting 3 in a row.

In this picture I won