ANSWER KEY

Common Core Standard
CC.4.MD.2
CC.4.NBT.4
Pre-Visit / Post-Visit

Story problems
Name____________________________________

Research and development is critical to acompany’s success and ability to staycompetitive. In the 1930s, Caterpillar
spent about $1 million on
research and development and wasgranted 127 patents. This number greweach year. In the 2000s, Caterpillar spent$1 billion and was granted 2,217 patents.
How much more money was spent on
research and development in the 2000s
than in the 1930s?
How many more patents were granted?
Answer: 1B - 1M = nine hundred ninetynine million / 2090 more patents weregranted in the 2000s

990H988K

The 988K Wheel Loader has a 12.5-ton rated payload capacity.
The 990H has a 16.5-ton rated payload capacity.
How many more tons can the 990H move than the 988K? How many more pounds?
(2,000 pounds = 1 ton)
Answer: 16.5-ton - 12.5-ton = 4.0-ton / 4 tons x 2,000 lbs. = 8,000 lbs.
1Common Core Standard
CC.4.MD.2
CC.4.NBT.4
Pre-Visit / Post-Visit

A ton of bricks weighs 2,000 pounds. The 740B
Articulated Truck has a 42-ton payload capacity.
How many more 2,000 pound loads can thetruck carry at one time?
(2,000 pounds = 1 ton)
Answer: The 740B could carry 41 additional
2,000 lb. loads at one time.

Remanufacturing is the process of returning
end-of-life products to the same condition as
when that product was originally manufactured.
Products are returned to the original “same asnew” condition or sometimes in better conditionin terms of durability, life span and performance.
Cat® Reman has 17 different remanufacturing
facilities around the world. Cat Reman took back174 million pounds of end-of-life material in
2013. That means that they either recycled orremanufactured 174 million pounds of material
in 2013.
If Cat Reman continued to take back 174 million
pounds a year over the next 10 years how many
pounds of material would that be?
Answer: 148M lbs. x 10 yrs. = $1,480,000

If a man weighs 200 pounds and the 797F
Mining Truck can haul 400 tons of material,
how many men could the 797F haul?
(10 men at 200 pounds each is equal to 1
ton or 2,000 pounds)
Answer: 400 tons x 10 men = $4,000 men

2Common Core Standard
CC.4.MD.2
CC.4.NBT.4
Pre-Visit / Post-Visit

Equipment on a mine site will run 24 hours a day, 7 days a week,
365 days a year.
How many hours a year will the equipment run?
Answer: 24 hrs. in one day x 365 days in one yr. = 8,760 hrs. a yr.

2014

The Caterpillar Tractor Company was formed in 1925. In 1986, Caterpillar
Tractor Company changed its name to Caterpillar Inc. to better represent its
diverse portfolio of products.
How many years was Caterpillar known as Caterpillar Tractor Company?
Answer: 1986—1925 = 61 yrs.

3

Common Core Standard
CC.4.MD.2
CC.4.NBT.4
Pre-Visit / Post-Visit

In 1928 the price to purchase a Caterpillar Model Twenty was $2,175. A canopy would cost anadditional $35. What would the total cost be to purchase the tractor and the canopy?
Answer: $2,175 + $35 = $2,210

7495

7395

The operating weight of the 7495 Electric Rope Shovel is 3,047,670 pounds.
The operating weight of the 7395 Electric Rope Shovel is 2,600,000 pounds.
How much less is the operating weight of the 7395 Electric Rope Shovel than
the 7495 Electric Rope Shovel?
Answer: 3,047,670—2,600,000 = 447, 670 lbs.
4