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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 5 - Mathematics
1.7 Working with Negative Numbers

AdditionAnswerExample
Sum of two positive integersis always a positive number 4 + 5 = 9
Sum of a positive and negative integeris either
positive or a
negative number
3 + -4 = -1
8 + -2 = 8 - 2 = 6
Sum of a negative and positiveis either
positive number or a
negative number
-3 + 4 = 1
-6 + 2 = -4
Sum of a two negative integersis always a negative number -3 + -4 = -7
-6 + -2 = -6 - 2 = -8
SubtractionAnswerExample
Difference of two positive integersis either positive or a negative number 7 - 5 = 2
5 - 7 = -2
Difference of a positive and negative integeris always positive number 3 - -4 = 3 + 4 = 7
6 - -2 = 8
Difference of a negative and positive integeris always negative number -3 - +4 = -3 - 4 = -7
-8 - +2 = -8 - 2 = -10
Difference of a two negative integersis either positive or a negative number -3 - -4 = -3 + 4 = 1
-6 - -2 = -6 + 2 = -4
Method:
  1. When there are two numbers, one positive and the other negative, subtract and use the sign of the greater number.
  2. When two numbers are of the same sign, add and use the sign the numbers have,
  3. When there is a negative sign, before a negative number, it becomes a positive number.
  4. When there is a positive sign, before a negative number, it remains unchanged.

Example: -4-5
Since the signs are same, add and use the negative sign.
Answer: -9

Example: 4 -(-3)
When there is a negative sign before the negative number, it becomes a positive number
4+3
Answer: 7

Example: 7 +(-3)
When there is a positive sign before the negative number, it remains unchanged
7-3
Answer: 4

Negative numbers are used in many ways, including financial statements, altitude measurements, temperature, golf scores and atomic changes.


Directions: Solve the following. Also write 5 examples of each kind.
Q 1: 10 - (-11) =
20
11
21
-1

Q 2: 0 + (-15) =
0
-15
15
Cannot be solved

Q 3: 4 - (-0) =
0
4
40
400

Q 4: 5 + (-4) =
1
9
2
0

Q 5: 48 - 22 =
70
22
26
24

Q 6: 5 + (-2) =
3
7
5
2

Q 7: 18 + (-18) =
36
-18
0
18

Q 8: 5 + (-5) =
0
5
10
-5

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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