Use mental math to solve for the missing number:

Answer:
39
Step-by-step explanation:
Let the number be x.
The quotient of x and 3 is 13.
x/3 = 13
Multiply both sides by 3.
x = 13 × 3
x = 39
Answer:
39
Step-by-step explanation:
The quotient of a number and 3 is 13. That's the same as saying n/3 = 13.
IF you multiply both sides of the equation by 3, you get n = 39, which is what we want.