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There are many different spiral number grids<br />
that can be made.<br />
The spiral on the right begins in the centre<br />
and spirals in a clockwise direction until it<br />
reaches the outside of the grid.<br />
1. Place a tick in the cell where you think<br />
the number 100 will be entered. Explain<br />
why you chose this spot.<br />
<strong>Number</strong> Spirals<br />
7 8 9 10<br />
6 1 2<br />
2. Place a cross in the spot where you<br />
think the number 50 will be. Explain why<br />
you chose this spot.<br />
5 4 3<br />
3. What numbers do you think will end up in the shaded cell and the black cell?<br />
Shaded cell:<br />
Black cell:<br />
Explain.<br />
4. Complete the spiral to check your thinking.<br />
The number spiral to the left begins in the top<br />
1<br />
left corner and spirals in an anticlockwise<br />
direction.<br />
2<br />
5. Place a tick where you think the number<br />
3<br />
100 will be entered. Explain why you<br />
4<br />
chose this spot.<br />
5<br />
6<br />
7<br />
8<br />
6. Place a cross where you think 50 will be<br />
placed. Explain why you chose this spot.<br />
9<br />
10 11 12 13 14<br />
7. What numbers do you think will end up in the shaded cell and the black cell?<br />
Shaded cell:<br />
Black cell:<br />
Explain.<br />
8. Make up your own number spiral puzzle using a different type of spiral grid.<br />
R.I.C. Publications www.ricgroup.com.au<br />
38<br />
<strong>Number</strong> <strong>Grids</strong><br />
ISBN 978-1-86311-826-2
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