Problem solving

Today I used 'Place Value' and 'Written Algorithm' to solve math problems.

[Tuatahi] First I read the question, which is - 'Siale, David, and Motu are teaming up to complete a set of Pokemon cards. There are 120 pokemon cards. Siale has 36 pokemon cards. David has 26 pokemon cards. Motu has 42 pokemon cards. How many more pokemon cards do they need?'

Next I did 'Place value'. I did  6+6+2=14, 30+20+40=90, 90+14=104. Motu, Siale,David has 104 pokemon cards. 10-4=6, 20-10=10, 100-100=0, 10+6=16.

[Ati] Then I did 'Written Algorithm'. 120 -104=16. First I added 36+26 +42=104. Then I did 120 -104=16 They need 16 pokemon cards to complete the set.

[Whakamutunga] Lastly I checked if the answer was 16 and the correct answer was 16.

I like this task because it helps me with doing addition and subtraction better.