Question

very sure that cannot do​

Answer 1

Fill in the Blanks:

1. 369 ÷ 1 = 369

2. -87 ÷ 1 = -87

3. (-75) ÷ 75 = -1

4. 48 ÷ 48 = 1

5. -12 ÷ 4 = -3

Questions:

1. Additive inverse of a number is what you add to a number to get zero.

In simple words a+b should be equal to 0.

For example -

• 6+(-6) = 0

Here, additive inverse of 6 is (-6)

• (-21)+21 = 0

Here, additive inverse of (-21) is 21.

2. Multiplicative inverse of a number is what you multiply to a number to get one.

In simple words a+b should be equal to 1. Multiplicative inverse is also the reciprocal of a number.

For example -

• 2 × $\frac{1}{2}$  = 1

Here, multiplicative inverse of 2 is $\frac{1}{2}$.

$\frac{5}{6}$ × $\frac{6}{5}$ = 1

3. Types of fraction are -

• Proper fraction - In this type of fraction the numerator is always smaller than the denominator.
• Improper fraction - In this type of fraction the numerator is always greater than the denominator.
• Mixed fraction - In this type of fraction we have a whole number and a fraction. This can be converted into improper fraction.

4.  $\frac{4}{5} = \frac{8}{10} =\frac{12}{15} = \frac{16}{20} = \frac{20}{25} = \frac{24}{30}$

Solve:

1.

$5 - \frac{3}{7}$

LCM = 7    

$\frac{5*7}{1*7} - \frac{3}{7} \\\\\frac{35}{7} - \frac{3}{7} \\\\\frac{32}{7}$

∴ The answer is $\frac{32}{7}$.

2.

$2+\frac{4}{8}$

LCM = 8

$\frac{2*8}{1*8} + \frac{4}{8} \\\\\frac{16}{8} + \frac{4}{8} \\\\\frac{20}{8} \\\\\frac{5}{2}$

∴ The answer is $\frac{5}{2}$

3.  $\frac{3}{5} + \frac{2}{6}+\frac{1}{7}$

LCM = 210

$\frac{3*42}{5*42} + \frac{2*35}{6*35} + \frac{1*30}{7*30} \\\\\frac{126}{210} + \frac{70}{210}+\frac{30}{210} \\\\\frac{226}{210}\\\\\frac{113}{105}$

∴ The answer is $\frac{113}{105}$.

4. $\frac{9}{11} + \frac{4}{5}+\frac{3}{2}+\frac{7}{10}$

LCM = 110

$\frac{9*10}{11*10} + \frac{4*22}{5*22}+\frac{3*55}{2*55}+\frac{7*11}{10*11}\\\\\frac{90}{110}+\frac{88}{110}+\frac{165}{110}+\frac{77}{110} \\\\\frac{420}{110} \\\\\frac{42}{11}$

∴The answer is $\frac{42}{11}$.

Hope this helps. Pls mark as brainliest answer.