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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 5 - Mathematics
1.4 Variables

  • Sometimes to solve a problem we have to form a mathematical equation.
  • A letter or a text string is used to denote an unknown quantity while forming an equation.
  • The unknown quantity is called a variable.
  • The equation may be solved to find the value of the variable.

Example:
a - 5 = 10
While solving an equation, the variables are kept on one side and the numbers are transferred to the other side of the equation.
So adding 5 to both sides we get,
a - 5 + 5 = 10 + 5
so we get a = 15

Note: If we perform any operation on one side of the equation, the same operation should be performed on the other side of the equation as well.


Directions: Find the value of the variable in each question and show your work. Also write at least 10 examples of your own involving the operations: addition and subtraction.
Q 1: 14 + n = 34
Answer:

Q 2: X = 29 - 7
Answer:

Q 3: W + 3 - 4 = 2
Answer:

Q 4: N = (8 X 2) + 2
Answer:

Q 5: x - 11 = 16
Answer:

Q 6: 33 + n = 42
Answer:

Q 7: n - 21=19
Answer:

Q 8: g + 5 = 25
Answer:

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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