Mathematics
Grade6
Easy

Question

What is the value of 20g, if g = 10 ?

  1. 2000    
  2. 2    
  3. 200    
  4. 10    

Hint:

This is an algebraic expression. An algebraic expression consists of two components: a variable and a constant. A variable is a quantity that doesn’t have any fixed value. It takes value according to the conditions. It is denoted by the alphabet. A constant is a quantity with a fixed value. In this question, value is assigned to the variable. We have to perform the required operations and find the final value.

The correct answer is: 200


    The given expression is 20g
    There is one variable and one constant in the above expression. The variables is : ’g’. Value assigned to the variable is are g = 10. We have to substitute this value and find the final value of the expression.
    There is one term in the above expression. We have to multiply the variable by a constant g.
    We have to first substitute the value and perform the required operations.
    To substitute the value, we have to replace ‘g’ by 10. After substituting the value, we will get the following equation:
    20g = 20(10)
    20g = 200
    Therefore, the value of equation is 200
    So option which is ‘200’ is the right option.

    We have to be careful about the operations because of the variables. We have to follow the proper procedure for performing the operations. The variables take different values under different conditions. So we have to be careful while substituting the values. The main part of this type of question is just replacing the variables by their values and performing the operation.

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