SOLUTION TO MULTIPLICATION PROCEDURES, PAGE 33
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!
KEEPING THE UNITS STRAIGHT
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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