Task 2: Simon your troublesome classmate watches the crocodiles. Five crocodiles are
sunning on the bank. Two dive off and swim away. One joins the remaining crocodiles
on the bank, then two more join them.
a. Write an algebraic equation and solve it to find the number of crocodiles on the
bank at the end of Simon’s observation?
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Task 3: A zookeeper brings out 1.5 kg of fish in a bucket for the lion training. For each
trick the lion does, she feeds the lion 0.55 kg. Write an expression to show the amount of
fish left in the bucket after x tricks, when x is equal to 9.
Task 4. There is an aquarium at the zoo. The zookeepers scuba dive in the tank to
interact with the fish at a rate of 10 cm in 8 seconds. How deep is the diver after 80
seconds?
Show your working.
MATHEMATICS PERFORMANCE TASK 87 CHRISTIE WAINWRIGHT