If you add 4.667 g and 3.2 g how many significant figures does the answer have

If you add 4.667 g and 3.2 g, the answer has 4 significant figures. The sum to the two given is 7.867.

To determine how many significant figures are there in a number, you must remember these three rules.

Non-zero digits are always significant.

Any zeros between two significant digits are significant.

Following zeros in the decimal portion ONLY are significant.