Answer:
You only have to sort (numbers with numbers and variables with variables) then do the operations (+/-).
Step-by-step explanation:

Answer: -0.7
Step-by-step explanation:
9 dived by 3 = 3
so he surfed for 3 hours = 1/3 of 9
and there are 6 hours left
so he spent 6 hours building a sandcastle
The answer is to that is 100
25times 4
Answer:
19
Step-by-step explanation:
If Catriona has 16 more stickers than Peter than the only thing you have to do is subtract and find the difference