Answer:

Add numbers with the "+" key. Hit the "+" button between any 2 numbers to add them. For example, to add 5 to 10, press "5," "+," and then "10."[2]

Add additional numbers to a series. For example, press "+" and "5" to add to the sum of "5 + 10." When you need the final answer, press the "=" button to get the sum of "20."

that is false

Answer:

maybe false because it's depends where u working electricity