human
Recognise and use efficient strategies for mental addition This is how Dora calculates the answer to \( 12.3+4.5 \) mentally ![Image showing a cartoon girl with three thought bubbles above her head. The first bubble states 'I added the whole part first 12+4=16'. The second states 'I then added the decimal part 0.3+0.5=0.8'. The third bubble states 'I then added 16 and 0.8 to get 16.8.So 12.3+4.5=16.8']() Dora uses the same method to calculate \( 3.5+21.8 \). Which of the following shows how she would do this? \( \begin{array}{c}3.5+21=24.5 \\ 24.5+0.8=25.3\end{array} \)
gpt
Does not interpret the correct order of operations from a worded problem