problem 22: fill in the missing number.
__÷5 = 9?
predict: I predict I will need to use multiplication in his sum.
clarify: there are no words, sentences or phrases that I need to clarify.
find the big question: what is the missing number?
this problem was very simple to do.
first I worked out what 9×5 was, and that was 45!
to double check, 45÷5=9!
the answer is 45.
summary: in this problem the mathematicians toolbox strategy I used was use my prior knowledge.