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```Adding and Subtracting
Large Numbers.
By Scott Mangum
Mississippi benchmark
subtracting ninedigit whole
numbers with
and without
regrouping.
Vocabulary
• Minuend – Is the number being subtracted from. (top
number)
• Subtrahend – Is the number being subtracted.
(bottom number)
• Difference – Is the answer to an subtraction problem.
• Regrouping – Is when you borrow a number from a
higher place value or carry a number to a higher place
value.
Subtraction with
regrouping
1 11
611
721
///
- 158
563
 Regrouping/Borrowing
 Regrouping/Carrying
739
+ 274
10
1113
Practice
• The population of
Jackson, MS is
2,844,658. The
population of
Birmingham, AL is
4,447,100. How
many more people
live in Birmingham
than Jackson?
4,447,100
- 2,844,658
1,602,442
Practice
• The American Red Cross
different disasters. The
\$289,000,000 for the
September 11th attack,
\$173,000,000 for the
Indian Ocean Tsunami,
and \$537,000,000 for the
relief efforts for Hurricane
Katrina. What is the
difference between the
tsunami and Katrina?
How much money did the
Red Cross collect in all?
\$537,000,000
-\$173,000,000
\$364,000,000
\$537,000,000
\$289,000,000
+\$173,000,000
\$999,000,000
Practice
• There were 2,725,716
houses built in 2002.
In 2003 consumers
built 3,010,738 more
homes. How many
houses were built in
2002 and 2003? How
many more houses
were built in 2003
than 2002?
3,010,738
+2,725,716
5,736,454
3,010,738
-2,725,716
285,022
```
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