Mental Calculation with Fractions and Percentages

IMPORTANT

Mental Calculation with Fractions and Percentages: Overview

This topic covers concepts, such as, Mental Calculation with Fractions & Mental Calculation with Percentages etc.

Important Questions on Mental Calculation with Fractions and Percentages

HARD
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Charlie was 140 cm last year. This year she is 5% taller. If Charlie is k cm tall in this year, then find the value of k.

MEDIUM
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Find the value of 58 of 4.8 kg

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Calculate:

213 of 39=_____

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Which one of the following is the odd one out? 

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True or false?

110% of 300 g=310 g

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True or false? 

175% of 80 ml=120 ml