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নবম-দশম শ্রেণী
Mathematics
Algebraic Expressions
Forming and Applying Algebraic Formulae in Real-Life Problems Related to Percentage
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Multiple Choice
A student scored 80 in a test where the maximum mark is 100. What percentage did the student score?
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$80 \times 100$
$\frac{80}{100} \times 100$
$100 - 80$
$80 \div 100$
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You want to apply a 15% discount on a Tk300 item. How do you calculate the discount amount?
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$300 \div 15$
$300 \times 0.15$
$300 + 0.15$
$300 \times 15$
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If you have a base quantity of $200$ and you want to find 25% of it, what is the correct calculation?
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$200 \times 0.25$
$200 + 0.25$
$200 - 25$
$200 \div 0.25$
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Which expression can be used to find 30% of a number $n$?
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$n \times 3$
$n - 0.30$
$n \times 0.30$
$n + 0.30$
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Which formula represents how to calculate a percentage of a quantity?
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$p = b + r$
$p = br$
$p = b - r$
$p = b \div r$
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