FRAME 1-10.
Solution to
In the previous addition problem, none of the columns added up to more
Frame 1-9
than 9. If the sum of a column is more than 9, write down the last (right)
digit under the column and add the remaining digit(s) to the next column
3
003
(the column to the left). REMEMBER: When adding, begin with the
212 or
212
column on the far right and then go to the left.
21
021
236
236
1
326
In the first (right) column, 6 + 6 = 12.
+146
The "2" is written below the column and
3 ones + 2 ones +
472
the "1" is carried to the next column where it is added
1 one = 6 ones.
with the "2" and the "4." (The "1," "2," and "4" are all
tens.)
0 tens +1 ten +
2 tens = 3 tens.
A more complicated addition problem is shown below.
0 hundreds +
1
1 2
2 hundreds +
367
7 + 6 + 6 + 8 = 27 Write "7" carry "2"
0 hundreds =
1, 4 1 6
2 + 6 + 1 + 7 + 0 = 16 Write "6" carry "1"
3 hundreds.
6, 5 7 6
1 + 3 + 4 + 5 + 1 = 14 Write "4" carry "1"
2, 1 0 8
1 + 0 + 1 + 6 + 2 = 10 Write "10" (There
10, 4 6 7
is no column to the left.)
NOTE: You do not have to write the
commas when adding, but may help to
keep the columns straight.
Now you add these numbers: "1459," "38," and "327."
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FRAME 1-11
Solution to
Another way of thinking about the problem
Frame 1-10
367 + 1416 + 6576 + 2108 is
1459
7+
6+
6+
8=
27
38
60 +
10 + 70 +
00 =
140
327
300 + 400 + 500 + 100 =
1300
1824
0000 + 1000 + 6000 + 2000 =
9000
10467
____________________________________________________________________________
FRAME 1-12.
Solution to
SUBTRACTION. Now, let's subtract whole numbers. Just as in
Frame 1-11
addition, like units must go under like units (ones under ones, tens under
tens, etc.).
No problem
was given.
Set up and work this subtraction
problem in the space to the
right: 3697 - 375
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MD0900
1-5