Explain how you can use mental maths to find 6 - 2 4 7 ?

We have to say how we shall use mental maths to find 6 - 2 4 7 Here, 6 can be considered as 5 + 1 and then, 5 + 7 7 . And, 2 4 7 may be considered as 2 + 4 7 . Now, we shall subtract 2 from 5 to obtain 3 . 7 7 and 4 7 has denominators same, so we shall subtract the numerators to obtain 7 - 4 = 3 and, the fractional part will be 3 7 . So, the result of 6 - 2 4 7 will be 3 + 3 7 , which is equal to 3 3 7 . This is how mental mathematics may be used to subtract 6 - 2 4 7 and, the required answer is 3 3 7 .

E M B I B E

New Mathematics Today Class 7>Chapter 3 - Rational Numbers>Exercise>Q 6

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7th ICSE

IMPORTANT

Earn 100

Simplify $9.48 - 6 \frac{9}{10} + 11 \frac{1}{2}$ . Write the answer in a mixed fraction.

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Important Questions on Rational Numbers

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7th ICSE

IMPORTANT

New Mathematics Today Class 7>Chapter 3 - Rational Numbers>Exercise>Q 7

Explain how you can use mental maths to find

6 - 2 \frac{4}{7}

?

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7th ICSE

IMPORTANT

New Mathematics Today Class 7>Chapter 3 - Rational Numbers>Exercise>Q 8

Can you subtract two fractions with common denominators and get an answer with different denominators? Explain your reasoning. If yes, provide two examples.

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7th ICSE

IMPORTANT

New Mathematics Today Class 7>Chapter 3 - Rational Numbers>Exercise>Q 9

Evaluate