Rainforest themed 4 way differentiated addition and subtraction problems, 4 sets on a page

All about equipment needed to be took on a Rainforest adventure, would fit in nicely with topic work including tent, hat, food etc...

First page 1 and 2 digit questions no decimals
Second page 2 and 3 digit questions, some decimal amounts e.g. £24.99
Third page 3 digit questions, with 2 decimal places for money and up to 3 amounts to add together
Fourth page 3 and 4 digits with up to 2 decimal places for money, 3 amounts and have to find how much change can be had from a certain amount.