subtraction [coordinates] [1]

20 19 18 17 16 15 14 13 12 11 21 22 23 24 25 26 27 28 29 30

Subract the y- coordinate from the x- coordinate of ............. 1. ........... the body of the boy in yellow trunks being thrown into the pool. 6 7 8 8 10 11 12 13 14 15 2. ........... the head of the woman with bright yellow hair. 3 4 5 6 7 8 9 10 11 12 3. ........... the legs of the woman in a pink swimsuit sat on the pool edge. 7 8 9 10 11 12 13 14 15 16 4. ........... the man in black shorts. 5 6 7 8 9 10 11 12 13 14 5. ........... the head of the boy in yellow trunks with one hand up. 8 9 10 11 12 13 14 15 16 17 6. ........... the body of the woman in red swimming the breast stroke. 1 2 3 4 5 6 7 8 9 10 7. ........... the bodies of the lifeguard and the woman with a towel. 6 7 8 9 10 11 12 13 14 15 8. ........... the head of the man swimming front crawl, second in lane one. 1 2 3 4 5 6 7 8 9 10 9. ........... the head of yellow hatted swimmer doing backstroke in lane two. 3 4 5 6 7 8 9 10 11 12 10. ........... the body of the woman in blue entering the pool by the steps. 3 4 5 6 7 8 9 10 11 12

There is a picture overlaid with a coordinates grid. On the right hand side there is a quiz to see how well you can subtract simple 4 letter coordinates. Each question has a coordinate square. Click the radio button below which matches that subtraction total. Remember, go in the door before you go up the stairs to create a coordinate. To restart the activity just refresh the page.