Pre-Algebra Demystified

(Marvins-Underground-K-12) #1
9

3,

185

þ 24
3,

PRACTICE

Add:



  1. 43þ 271 þ 16

  2. 523þ8,312þ 53

  3. 6,275,341þ379,

  4. 263þ62,971þ 56 þ 483

  5. 3,741þ 60 þ 135 þ23,


ANSWERS



  1. 330

  2. 8,

  3. 6,654,

  4. 63,

  5. 27,


Subtraction of Whole Numbers


In subtraction, the top number is called the minuend. The number being
subtracted (below the top number) is called thesubtrahend. The answer in
subtraction is called theremainderordifference.


568 minuend
 23 subtrahend
545 difference
To subtract two numbers, write the numbers in a vertical column and then
subtract the bottom digits from the top digits. Proceed from right to left. When
the bottom digit is larger than the top digit, borrow from the digit at the top of
the next column and add ten to the top digit before subtracting. When borrow-
ing, be sure to reduce the top digit in the next column by 1.


EXAMPLE
Subtract: 16,8753,423.


CHAPTER 1 Whole Numbers 5

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