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Number
EXAMPLES & SOLUTIONS
Expressions: Numbers
Number lines allow you to visualize the direction of numbers .
Numbers are mathematical objects needed to count, measure or label.
Number lines are utilized to explain the direction of numbers.
A negative number is less than zero. A positive number is greater than zero.
NUMBERS
Explanation of units
- 3 units
- 3 units
-7
-6
-5
-4
-3
-2
0
1
2
3
4
5
6
7
-3
+3
4 + 3 = ?
7 = 7
+ 4 units
+ 3 units
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
7
7 - (3) = ?
7 - 3 = ?
4 = 4
+7 units
-3 units
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
7
Number 2
EXAMPLES
NUMBERS LINES
Adding Numbers
4 + 1 = ?
5 = 5
+ 4 units
+ 1 unit
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
7
-2 + 6 = ?
4 = 4
-2 units
+6 units
7
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
-7
-6
-5
-4
2 - (8) = ?
-6 = -6
-8 units
+2 units
-3
-2
-1
0
1
2
3
4
5
6
7
-5 - 9 = ?
-14 = -14
-9 units
-5 units
-14
-12
-10
-8
-6
-4
-2
0
2
4
6
8
10
12
14
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