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Addition of Whole Numbers
Adding is used to find the total number of two or more quantities. The total is called the sum, or the number that results from the addition. You use addition to find the total distance that you travel if the first distance is 1,240 miles and the second distance is 530 miles. The two numbers to be added, 1,240 and 530, are called the addends. The total distance, 1,770 miles, is the sum
Add 4321 and 3252 Add 2521 and 6676
4 3 2 1 6 6 7 6
+ 3 2 5 2 + 3 3 2 1
7 5 7 3 9 9 9 7
Add 3467 and 1735 Add 7636 and 94 57
3 4 6 7 9 4 5 7
+ 1 7 3 5 +7 6 3 6
5 2 0 2 18 0 9 3
6 5 4 3 7 6 5 4 3 7
+ 2 1 7 6 3 + 2 1 7 6 3
8 7 2 0 0 8 7 2 0 0
Word Problem (Addition)
(a). The population of citizens living in North London is 6 3 6 9 and East London is 7 6 9 3. How many citizens altogether live in the North and East London?
North London = 6 3 6 9
East London = + 7 6 9 3
1 4,062
(b). what is the sum of 416766 and the addition of 6176 and 4 9 32
4 1 6 7 6 6
6 1 7 6
+ 4 9 3 2
4 2 7 8 7 4
Subtraction of Whole Numbers
Subtracting involves finding the difference between two or more numbers. It is a method that can be used for a variety of applications, such as balancing a checkbook, planning a schedule, cooking, or travel. Suppose a government official is out of the U.S. on business for 142 days a year, including travel time. The number of days per year she is in the U.S. is the difference of 365 days and 142 days. Subtraction is one way of calculating the number of days she would be in the U.S. during the year.
When subtracting numbers, it is important to line up your numbers, just as with addition.
The minuend is the greater number from which the lesser number is subtracted. The subtrahend is the number that is subtracted from the minuend. A good way to keep minuend and subtrahend straight is that since subtrahend has “subtra” in its beginning, it goes next to the subtraction sign and is the number being subtracted. The difference is the quantity that results from subtracting the subtrahend from the minuend. In 86 – 52 = 34, 86 is the minuend, 52 is the subtrahend, and 34 is the difference.
Words associated with subtraction include minus, take away, remove and difference.
Subtraction of Whole Numbers (4-6 Digits)
Subtract 3252 from 7573 Subtract 4521 from 6676
7 5 7 3 6 6 7 6
– 3 2 5 2 – 4 5 2 1
4 3 2 1 2 1 5 4
Take away 1735 from 3467 Remove 7636 from 94 57
3 4 6 7 9 4 5 7
– 1 7 3 5 – 7 6 3 6
1 7 3 2 1 8 2 1
6 5 4 3 7 6 5 4 3 7
-2 1 7 6 3 – 2 1 7 6 3
8 7 2 0 0 4 3 6 7 4
Word Problem on Subtraction
A football factory in American produced 65419 balls but gave out 43914 balls. How many balls does she have left?
Produced 6 5 14 1 9
Gave out 4 3 9 1 4
2 1 5 0 5
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(B). Calculate the difference between 71600 and 21699
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7 1 6 0 10
– 2 1 6 9 9
4 9 9 0 1
- The population of citizens living in North London is 6 3 6 9 and East London is 7 6 9 3. How many citizens altogether live in the North and East London?
- What is the sum of 67453 and the addition of 6176 and 7832
- A woman who owns a music store starts her week with 965 CDs. She sells 452 by the end of the week. How many CDs does she have remaining?
- Each year, John is out of the U.S. on business for 142 days, including travel time. Number of days per year he is in the U.S. is the difference of 365 days and 142 days. How many days during the year is John in the U.S.?
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