Question 22
Mr Atkins wrote some homework questions for his class to practise order of operations. One of the questions was $2+3\times(4+3)$, with answer 23. However, one of his students just worked from left to right and ignored the brackets, writing $2+3=5$, $5\times4=20$, $20+3=23$, the correct answer.
Mr Atkins thought that this was fascinating, so he tried to come up with another question where working left to right gave the right answer. He tried $5+4\times(7+\square)$.
What number should he put in the box?
Mr Atkins thought that this was fascinating, so he tried to come up with another question where working left to right gave the right answer. He tried $5+4\times(7+\square)$.
What number should he put in the box?