To find 50% of a number, divide the number by . To find 25% of a number, divide the number by . To find 10% of a number, divide the number by .

Tom drove 206 miles in 3.9 hours. estimate his average speed.

Mabel paid $2.95 for a granola bar dimes and quarters. she used five few were quarters then dimes. how many dimes and quarters did she use to pay for the granola bar.

Suppose a batch of steel rods produced at a steel plant have a mean length of 150 millimeters, and a standard deviation of 12. if 100 rods are sampled at random from the batch, what is the probability that the mean length of the sample rods would differ from the population mean by less than 0.5 millimeters?