8th Standard Syllabus & Materials
8th Standard
Tamilnadu 8th Standard கணிதம் இயற்கணிதம் Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard கணிதம் எண்கள் Important Questions And Answers Study Material - QB365 Set B
NEW8th Standard
Tamilnadu 8th Standard கணிதம் எண்கள் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
Tamilnadu 8th Standard Social Science பொருளியல் - பொது மற்றும் தனியார் துறைகள் Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science குடிமையியல் - நீதித்துறை Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science குடிமையியல் - பாதுகாப்பு மற்றும் வெளியுறவுக் கொள்கை Important Questions And Answers Study Material - QB365

Published on: 27/08/2019
Rational Numbers
Download Tamil Nadu 8th Standard Maths question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Maths Test1.
The multiplicative inverse of -1 is ________.
2.
If \(x\times \frac { -55 }{ 63 } =\frac { -55 }{ 63 } \times x=1\) then x is called the _______________ of \(\frac { 55 }{ 63 } \)
3.
If distributive property is true for \(\left( \frac { 3 }{ 5 } \times \frac { -4 }{ 9 } \right) +\left( x\times \frac { 15 }{ 17 } \right) =\frac { 3 }{ 5 } \times (y+z)\) then x, y, z are ________ , ________ and ________.
4.
If -3 x \(\frac { -6 }{ 11 } \) = \(\frac { -6 }{ 11 } \times x\) is _______________
5.
The multiplicative inverse of \(2\frac { 3 }{ 5 } \) is _____________
6.
The multiplicative inverse exists for all rational numbers
7.
The product of two negative rational numbers is a positive rational number.
8.
The additive inverse of \(\frac { -11 }{ -17 } \) is \(\frac { 11 }{ 17 } \)
9.
Associative property is not true for subtraction of rational numbers.
10.
\(\frac { -7 }{ 8 } \times \frac { -23 }{ 27 } =\frac { -23 }{ 27 } \times \frac { -7 }{ 8 } \) illustrates the closure property of rational numbers
11.
\(\left( 1-\frac { 1 }{ 2 } \right) \times \left( \frac { 1 }{ 2 } -\frac { 1 }{ 4 } \right) \div \left( \frac { 3 }{ 4 } -\frac { 1 }{ 2 } \right) \)=
\(\frac { 1 }{ 2 } \)
\(\frac { 3 }{ 4 } \)
\(\frac { 1 }{ 4 } \)
\(\frac { -1 }{ 2 } \)
12.
\(\frac { 1 }{ 2 } -\left( \frac { 3 }{ 4 } -\frac { 5 }{ 6 } \right) \neq \left( \frac { 1 }{ 2 } -\frac { 3 }{ 4 } \right) -\frac { 5 }{ 6 } \) illustrates that subtraction does not satisfy the ________ property for rational numbers.
commutative
closure
distributive
associative
13.
Closure property is not true for division of rational numbers because of the number
0
-1
0
\(\frac { 1 }{ 2 } \)
14.
Which of the following illustrates the inverse property for addition?
\(\frac { 1 }{ 8 } -\frac { 1 }{ 8 } =0\)
\(\frac { 1 }{ 8 } +\frac { 1 }{ 8 } =\frac { 1 }{ 4 } \)
\(\frac { 1 }{ 8 } +0=\frac { 1 }{ 8 } \)
\(\frac { 1 }{ 8 } -0=\frac { 1 }{ 8 } \)
15.
Multiplicative inverse of 0 (is)
0
1
-1
does not exist
16.
\(\frac { 22 }{ 7 } \)
17.
\(\frac { 1 }{ 0 } \)
18.
\(\frac { -4 }{ 9 } \times \frac { 9 }{ -4 } =\frac { 9 }{ -4 } \times \frac { -4 }{ 9 } =1\)
19.
\(\frac { -1 }{ 3 } \left( \frac { 1 }{ 4 } +\frac { 2 }{ 3 } \right) =\left( \frac { -1 }{ 3 } \times \frac { 1 }{ 4 } \right) +\left( \frac { -1 }{ 3 } \times \frac { 2 }{ 3 } \right) \)
20.
\(\left( \frac { 5 }{ 6 } +-1 \right) +\frac { -3 }{ 4 } =\frac { 5 }{ 6 } +\left( -1+\frac { -3 }{ 4 } \right) \)
1.
( )
-1
2.
( )
Multiplicative Inverse
3.
( )
\(\frac { 3 }{ 5 } \), \(\frac { -4 }{ 9 } \) and \(\frac { 15 }{ 17 } \)
4.
( )
-3
5.
( )
\(\frac { 5 }{ 13 } \)
6.
(b)
7.
(a)
8.
(b)
9.
(a)
10.
(b)
11.
(b)
\(\frac { 3 }{ 4 } \)
12.
(d)
associative
13.
(c)
0
14.
(a)
\(\frac { 1 }{ 8 } -\frac { 1 }{ 8 } =0\)
15.
(d)
does not exist
16.
a rational number
17.
does not exist
18.
multiplicative inverse property
19.
distributive property of multiplication over addition
20.
associative property of addition
8th Standard Syllabus & Materials
8th Standard
Tamilnadu 8th Standard Social Science புவியியல் - புவிப்படங்களைக் கற்றறிதல் Important Questions And Answers Study Material - QB365
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Tamilnadu Stateboard 8th Standard Subjects
Tamilnadu Stateboard Standards