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 temperature on Monday was 35.2 degree C. On Tuesday it increased by 1.7 degree C. What was the temperature of Tuesday?

Right Option : C
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Explanation
Question : 2

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

Right Option : A
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Explanation
Question : 3

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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Explanation
 
 


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