Download Whole Number

Chapter 1.1
Whole Number Operations
McDougal Littell
Middle School Math
Course 1
Objective: Add, subtract, multiply,
and divide whole numbers.
Joseph Williams
Melvin E. Sine Elementary
[email protected]
Vocabulary
Whole Number – p. 684 – the numbers 1,2,3,…..
Sum – p. 689 – the result when two or more numbers are
added.
Difference – p. 689 – the result when one number is
subtracted from another number.
Vocabulary
Product – p. 690 – the result when two or more numbers
are multiplied.
Quotient – p. 691 – the result of a division.
Divisor – p. 691 – the number by which another number is
divided
Dividend – p. 691 – a number that is divided by another
number
Remainder – p. 691 – if a divisor does not divide a
dividend evenly, the remainder is the whole number left
over after the division
Adding Whole Numbers
1. Line up the numbers in the ones
place.
2. Add the ones.
3. Add the tens.
49 + 36
1.)
49
+36
2.)
1
49
+36
5
3.)
1
49
+36
85
Adding Whole Numbers
You have 92 baseball cards. Your brother
gives you 37 baseball cards. How many cards
do you have?
92
+37
Did you get 129?
Subtracting Whole Numbers
1. Line up the numbers in the ones place.
2. Subtract the ones.
3. Subtract the tens (and so on)
76 - 39
1.)
76
- 39
2.)
6
16
76
- 39
7
3.)
You need more
ones to subtract
9, so regroup.
6
16
76
- 39
37
Subtracting Whole Numbers
The scores on your first two
math tests were 78 and 91. By
how much did your score
improve?
91
- 78
Did you get 13?
Multiplying Whole Numbers
Your guitar lessons cost $25 per week. How
much will you pay for 12 weeks of lessons?
You need to find the product of 25 x 12.
First, multiply 25 by the ones’ digit 2.
25
x 12
50
25
300
Then, multiply 25 by the tens’ digit 1.
Add the partial products.
Multiplying Whole Numbers
You have 12 boxes of apples.
Each box has 14 apples in it.
How many apples do you have?
12
x 14
Did you get 168?