Explain how you can tell the difference between the centimeter and millimeter marks when measuring an object with a metric ruler

Step-by-step explanation:

A metric ruler because the end is often not perfect. For example, if a meter stick shows centimeters but not millimeters. you can also estimate the length that an object extends between centimeter that marks to measure it to the nearest millimeter. hope that helped

assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation:

i think there was a typo. you wrote pat brings 3 quarts of ice-cream to the party. each serving of ice-cream is 1 6 quart. how many total servings of ice-cream does pat bring to the party? i think the bold is supposed to be 1/6. so 1 quart of ice cream = 6 servings. 6 * 3 = 18.