How do you explain the concept of even and odd numbers to a first grader? any tips? ?

Will gve pints stars and brainliest

What is always true when two whole numbers are subtracted?

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample