Mental Maths Class 5 Fractions and Decimals

Asked by AKSHAY GURU VARADHARAJAN · SRI CHAITANYA TECHNO SCHOOL, JAYANTI NAGAR.

I am a decimal number. If you multiply me by 10, I am less than 50. If you add me to 0.75, the result is a whole number. Who am I?

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A 4.25
B 3.75
C 0.35
D 5.25

Show answer and explanation

Answer: A. 4.25

Explanation: To get a whole number when adding 0.75, the decimal must end in .25. Since the number multiplied by 10 must be less than 50, the number itself must be less than 5. 4.25 fits both rules.

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I am a decimal number. If you multiply me by 10, I am less than 50. If you add me to 0.75, the result is a whole number. Who am I?

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