Statement Sums Involving Decimals


 
 
Concept Explanation
 

Statement Sums Involving Decimals

Statement sums involving decimals:

Example 1: If 58 out of 100 students in a school are boys, then write a decimal for the part of the school that consists of boys.

Solution: We can write a fraction and a decimal for the part of the school that consists of boys.

 tiny frac{58}{100}=0.58

Example 2: Melissa purchased $39.46 in groceries at a store. The cashier gave her $1.46 in change from a $50 bill. Melissa gave the cashier an angry look. What did the cashier do wrong?

Solution: We need to estimate the difference to see if the cashier made a mistake.

$50.00 - $40.00 = $10.00

Estimate: $1.46 is much smaller than the estimated difference of $10.00. So the cashier must have given Melissa the wrong change.

Sample Questions
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Question : 1

The cost of 15 pens is Rs. 148.50. Then the cost of one pen is:

Right Option : A
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Question : 2

Raman Took a loan of Rs 9560 from a money lender. He paid Rs 12600 back to the money lender in one year. How much amount did he pay as interest to the money lender.

Right Option : C
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Question : 3

In a school there are 11 classes. Each class has five sections and each section has equal number of students.If total number of students is 6930. How many students are there in each section of a class?

Right Option : D
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Explanation
 
 


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