The correct option is A 455/100 23/4 + 14/5 Converting into improper fraction 11/4+9/5 Since 4 amp; 5 are coprime numbers,the LCM is 20 ∴ 11×5/4×5+9×4/5×4 = ...

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Standard VI

Mathematics

Fractions

2 3/4+1 4/5=-

Question

$2 \frac{3}{4} + 1 \frac{4}{5}$ = ____

$\frac{455}{100}$

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$\frac{475}{100}$

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$\frac{445}{100}$

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$\frac{485}{100}$

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Solution

The correct option is A
$\frac{455}{100}$

$2 \frac{3}{4} + 1 \frac{4}{5}$

Converting into improper fraction

$\frac{11}{4} + \frac{9}{5}$

Since 4 & 5 are coprime numbers,the LCM is 20

$∴ \frac{11 \times 5}{4 \times 5} + \frac{9 \times 4}{5 \times 4} = \frac{55 + 36}{20} = \frac{91}{20}$

Multiply numerator and denominator by 5; to make denominator as power of 10

= $\frac{91 \times 5}{20 \times 5} = \frac{455}{100}$

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Similar questions

Find the LCM of $2 \frac{3}{4}$ and $1 \frac{4}{5}$ .

Q. Find the missing number:

3, 1, 4, 5, 9, 14, 23, ?

Q. Solve:

1 \frac{4}{5} - 2 \frac{3}{4}

\frac{8}{11} + \frac{3}{8} + \frac{9}{10}

Q. Write the magnitude of each number.

(1) +38
(2) −23
(3) 0
(4) −5
(5) +14

$3 \frac{2}{7} - 2 \frac{3}{14} - 1 \frac{2}{7} = ? + 2 \frac{3}{14}$

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234+145 = ____

The correct option is A 455100 234+145 Converting into improper fraction 114+95 Since 4 & 5 are coprime numbers,the LCM is 20 ∴ 11×54×5+9×45×4=55+3620=9120 Multiply numerator and denominator by 5; to make denominator as power of 10 =91×520×5=455100

$2 \frac{3}{4} + 1 \frac{4}{5}$ = ____