Mental math is something that can be done i your head.
for example you can do 1+1 in your head and you dont need a calculator or paper to do it so i would be called mental math
Hope this helps
remember if you ever need anything and you dont want to waste points you can just post it on my pfp or message me the question
Following are calculation to the given eqution:
Given:

To find:
Solve the equation.
Solution:

Therefore, the final solution is "
".
Learn more:
brainly.com/question/12685776
Answer: Equivalent
Step-by-step explanation:
There is the same amount of red filling in the boxes in both.
Answer:
(Amount for 1 inch of red ribbon) x (240) = total cost
Step-by-step explanation: