English

Fill in the Blanks: − 4 5 × ( 5 7 + − 8 9 ) = ( − 4 5 × . . . . . ) × − 8 9 - Mathematics

Advertisements
Advertisements

Question

Fill in the blanks:

\[\frac{- 4}{5} \times \left( \frac{5}{7} + \frac{- 8}{9} \right) = \left( \frac{- 4}{5} \times . . . . . \right) \times \frac{- 8}{9}\]
Sum
Advertisements

Solution

\[ \frac{5}{7}\]
\[x \times (y \times z) = (x \times y) \times z (\text{associativity of multiplication} )\]

shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Rational Numbers - Exercise 1.6 [Page 33]

APPEARS IN

RD Sharma Mathematics [English] Class 8
Chapter 1 Rational Numbers
Exercise 1.6 | Q 8.4 | Page 33

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

Simplify:

\[1 + \frac{- 4}{5}\]

Subtract the first rational number from the second in each of the following:

\[\frac{1}{4}, \frac{- 3}{8}\]

Simplify:

\[\left( \frac{1}{2} \times \frac{1}{4} \right) + \left( \frac{1}{2} \times 6 \right)\]

Divide:

\[\frac{7}{- 4} \text{by} \frac{63}{64}\]

If `p/q` is a rational number, then p cannot be equal to zero.


Solve the following: Select the rational numbers from the list which are also the integers.

`9/4, 8/4, 7/4, 6/4, 9/3, 8/3, 7/3, 6/3, 5/2, 4/2, 3/1, 3/2, 1/1, 0/1, (-1)/1, (-2)/1, (-3)/2, (-4)/2, (-5)/2, (-6)/2`


The average life expectancies of males for several states are shown in the table. Express each decimal in the form `p/q` and arrange the states from the least to the greatest male life expectancy. State-wise data are included below; more indicators can be found in the “FACTFILE” section on the homepage for each state.

State Male `bb(p/q)` form Lowest terms
Andhra Pradesh 61.6    
Assam 57.1    
Bihar 60.7    
Gujarat 61.9    
Haryana 64.1    
Himachal Pradesh 65.1    
Karnataka 62.4    
Kerala 70.6    
Madhya Pradesh 56.5    
Maharashtra 64.5    
Orissa 57.6    
Punjab 66.9    
Rajasthan 59.8    
Tamil Nadu 63.7    
Uttar Pradesh 58.9    
West Bengal 62.8    
India 60.8    

Source: Registrar General of India (2003) SRS Based Abridged Lefe Tables. SRS Analytical Studies, Report No. 3 of 2003, New Delhi: Registrar General of India. The data are for the 1995-99 period; states subsequently divided are therefore included in their pre-partition states (Chhatisgarh in MP, Uttaranchal in UP and Jharkhand in Bihar)


Every natural number is a rational number but every rational number need not be a natural number.


Write the rational number whose numerator and denominator are respectively as under:

(–4) × 6 and 8 ÷ 2


Write any three rational numbers between the two numbers given below.

−2.3 and −2.33


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×