The average mass of the eggs laid by chickens on ms. watson’s farmis 3.5 grams. about how many grams does a dozen eggs weigh

If the average mass of 1 egg is 3.5 gramsand a dozen eggs = 12 eggsthen 12 eggs (or a dozen eggs) weigh (12 * 3.5) = 42 grams <==

This law is sometimes called the grouping property. as you can see, regardless of how the numbers are grouped, the answer is still 13. the associative law of multiplication is similar to the same law for addition. it says that no matter how you group numbers you are multiplying together, you will get the same answer.