Description: in maths we have been working with troy. We have been focusing on mutipling and dividing decimals. When wim not working with troy i am doing work from my NZCM stage 7 book. In stage 7 I have been focusing on propositional ajusment. My go to strategy would be known facts.
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Big Idea: my goal is to use the most effective stratigy for the question I get.
in the second question I did known facts and splitting. I split 176 into 160 &16 when I work out that 5x32 = 160 and you can't divide 16 by 32 so you will need 6 buses because you can't have half a bus or leave 16 people behind.
The first strategy I used known facts. I went 30x5= 150 & 2x5=10 then I added 10+150 witch equals 160 so you need another bus so you don't leave anyone behind. So you get 6 buses.
In the third picture I used kf. I went 15x13=195 then I went 13x.10=1.30 then I - 1.30 off and got 193.70. Sorry I got the 2.30 wrong it was 1.30.
In the fourth picture I used PVP. I split the 14.90 into 14 and 90 and went 14x13 which equals 182 & 90x13=1170 but then you have to put the decimal back in so you have 11.70. Then you add 182 & 11.70 which gives you an answer of 193.70. Comment below if you got a different answer on any of the questions what it was and how you got it.
Evaluation: I reckon I did well on using the most effective stratigy because I got quick effective answers on most of them but next time I will try to use the best stratigy on all of the questions.
Lachlan, you have explained your strategies effectively in your big idea which is great to see, thanks for taking the time to do this. I wonder if people could follow what you did without it?
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