ANSWERS:

a. 0 x 17 = 0

b. 0

c. 0

(1)

207

(2)

214

(3)

3 0,4 0 6

x 12

x

800

x

14

414

1 7 1,2 0 0

121624

2 0 7__

3 0 4 0 6__

2,4 8 4

4 2 5,6 8 4

If you got them correct -- good work!

While you have been multiplying numbers and getting answers, you have not been concerned

with a unit of measure, like inches, feet, gallons, barrels.

When you have problems about measure, you must be very careful that the units you are using

are correct, or you cannot get the right answer. For example, suppose you were told that a pipeline you

were building was to be I mile long, but you now had 2,000 feet of pipe. Let's find how much more

pipe you will need.

1.

The first step is to change 1 mile into feet because you must have the unit of measure the

same before you can work the problem.

1 mile = 5,280 feet.

2.

Then subtract the 2,000 feet of pipe on hand from 5,280 feet.

5, 2 8 0

feet

- 2, 0 0 0

feet

3, 2 8 0

feet of pipe required.

As you can see, you used only one unit -- feet.

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