For all question 3 you just need to work out the answers and show your working out :)
a. 297
b. 567
c. 837
d. I added the tens together and the units
4. a. 10
i don't know the rest
5. a. 0.68
b. 1.34
6. a. ???
b. 1 2/5
7. a. 0.50 - 1 - 06.00? - 700.00
b. 0.80 - 9 - 31.00? - 600.00
I think that's correct ;)