EXAMPLE: Find the sum of 263, 19, and 1202.
(the 1 is "carried")
1
263
(addend)
19
(addend)
+1202
(addend)
1484
(sum)
1-3.
SIMPLE SUBTRACTION
a. The number "from which" another number is taken away is the "minuend."
The number that is taken away is the "subtrahend." The answer is the "difference."
EXAMPLE: Subtract 4 from 17.
17 (minuend)
-4 (subtrahend)
13 (difference)
b. When you are doing a problem in subtraction, always remember to keep the
columns of numbers in straight lines.
c. If the minuend in any column is smaller than the subtrahend, you can
"borrow" from the next column to the left. This gives you ten more to work with in the
right hand column but one less in the left hand column from which you have borrowed.
EXAMPLE: What is 35 minus 28?
35
-28
To do the problem above, you have to change the 5 in the minuend to 15, and
subtract 1 from 3 in the minuend.
(10 is "borrowed")
21
35
/
-2 8
7
1-4.
PRACTICE 1-1
DIRECTIONS:
Complete the following problems. The answers are in paragraph 1-5
on the following page. If you miss two or more problems, review the
section again before proceeding with the subcourse. Follow the same
instructions for the other practice exercises in the lesson.
MD0904
1-3