No, Roberto is missing a decimal point.
5.1 * 3.6 = 18.36
No 5.1 * 36 = 183.6
multiplied by
Carlos lent his basketball to Roberto and you. This is perfectly correct.
"Correct thinking" is just what the name implies. Thinking that is not erroneous. Logically correct thought.
That is the correct spelling of "thinking."
9 is the correct answer
No.
Thinking is the correct spelling.
8 multiplied by 6 equals 48
It is correct.
Your answer is 1200
Both are correct.