Question

Malcolm ran the 440-yard and the 220-yard dash at a track meet.There are 3 in one yard. How many total feet did Malcolm run?Estimate first. Then check for reasonableness.

Answer 1

440 x 3 = 1320

220 x 3 = 660

1320 + 660 = 1980, which is your answer.



440 is close to 400, so 400 x 3 = 1200

220 is close to 200, so 200 x 3 = 600

1200 + 600 = 1800



This is a reasonable estimate.

Answer 2

For this case we have the following conversions:

1 yard = 3 feet

The estimate distance Is:

400yd = 1200feet

200yd=600 feet

Ten, the estimate Is:

1200 + 600 = 1800 feet

The real distance Is:

The total distance in yards is given by:

440 + 220 = 660 yd

Then, let's transform this distance to feet, with the given conversion:

660 * 3 = 1980 feet

The distance traveled is reasonable for a person

Comparing the estimate and the actual answer, the distance malcom Ran Is reasonable.

Answer:

Malcolm ran 1980 feet.

The distance is reasonable.