{"id":3158,"date":"2024-01-25T15:11:27","date_gmt":"2024-01-25T09:41:27","guid":{"rendered":"https:\/\/www.learncram.com\/?p=3158"},"modified":"2024-01-27T09:28:38","modified_gmt":"2024-01-27T03:58:38","slug":"selina-concise-mathematics-class-8-icse-solutions-chapter-1","status":"publish","type":"post","link":"https:\/\/www.learncram.com\/selina-solutions\/selina-concise-mathematics-class-8-icse-solutions-chapter-1\/","title":{"rendered":"Selina Concise Mathematics Class 8 ICSE Solutions Chapter 1 Rational Numbers"},"content":{"rendered":"

Selina Concise Mathematics Class 8 ICSE Solutions Chapter 1 Rational Numbers<\/h2>\n

Selina Publishers Concise Mathematics Class 8 ICSE Solutions Chapter 1 Rational Numbers<\/strong><\/p>\n

Rational Numbers Exercise 1A – Selina Concise Mathematics Class 8 ICSE Solutions<\/h3>\n

Question 1.<\/span>
\nAdd, each pair of rational numbers, given below, and show that their addition (sum) is also a rational number:
\n\"Selina
\nSolution:
\n<\/span>\"Selina
\n\"Selina
\n\"Selina
\n\"Selina
\n\"Selina<\/p>\n

Question 2.<\/span>
\nEvaluate:
\n\"Selina
\nSolution:
\n<\/span>\"Selina
\n\"Selina
\n\"Selina
\n\"Selina
\n\"Selina<\/p>\n

Question 3.<\/span>
\nEvaluate:
\n\"Selina
\nSolution:
\n<\/span>\"Selina
\n\"Selina
\n\"Selina
\n\"Selina<\/p>\n

Question 4.<\/span>
\nFor each pair of rational numbers, verify commutative property of addition of rational numbers:
\n\"Selina
\nSolution:<\/span>
\n\"Selina
\n\"Selina
\n\"Selina
\n\"Selina
\n\"Selina
\n\"Selina
\n\"Selina<\/p>\n

Question 5.<\/span>
\nFor each set of rational numbers, given below, verify the associative property of addition of rational numbers:
\n\"Selina
\nSolution:<\/span>
\n\"Selina
\n\"Selina
\n\"Selina
\n\"Selina
\n\"Selina
\n\"Selina
\n\"Selina
\n\"Selina<\/p>\n

Question 6.<\/span>
\nWrite the additive inverse (negative) of:
\n\"Selina
\nSolution:<\/span>
\n\"Selina<\/p>\n

Question 7.<\/span>
\nFill in the blanks:
\n\"Selina
\nSolution:<\/span>
\n\"Selina<\/p>\n

Question 8.<\/span>
\nState, true or false:
\n\"Selina
\nSolution:<\/span>
\n\"Selina<\/p>\n

Rational Numbers Exercise 1B – Selina Concise Mathematics Class 8 ICSE Solutions<\/h3>\n

Question 1.<\/span>
\nEvaluate:
\n\"Selina
\nSolution:<\/span>
\n\"Selina
\n\"Selina
\n\"Selina
\n\"Selina<\/p>\n

Question 2.<\/span>
\nSubtract:
\n\"Selina
\nSolution:
\n<\/span>\"Selina
\n\"Selina
\n\"Selina
\n\"Selina<\/p>\n

Question 3.<\/span>
\nThe sum of two rational numbers is \\(\\frac { 9 }{ 20 }\\). If one of them is \\(\\frac { 2 }{ 5 }\\), find the other.
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 4.<\/span>
\nThe sum of the two rational numbers is \\(\\frac { -2 }{ 3 }\\). If one of them is \\(\\frac { -8 }{ 5 }\\), find the other.
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 5.<\/span>
\nThe sum of the two rational numbers is -6. If one of them is \\(\\frac { -8 }{ 5 }\\), find the other.
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 6.<\/span>
\nWhich rational number should be added to \\(\\frac { -7 }{ 8 }\\) to get \\(\\frac { 5 }{ 9 }\\) ?
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 7.<\/span>
\nWhich rational number should be added to \\(\\frac { -5 }{ 9 }\\) to get \\(\\frac { -2 }{ 3 }\\) ?
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 8.<\/span>
\nWhich rational number should be subtracted from \\(\\frac { -5 }{ 6 }\\) to get \\(\\frac { 4 }{ 9 }\\) ?
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 9.<\/span>
\n(i) What should be subtracted from -2 to get \\(\\frac { 3 }{ 8 }\\)
\n(ii) What should be added to -2 to get \\(\\frac { 3 }{ 8 }\\)
\nSolution:
\n<\/span>\"Selina
\n\"Selina<\/p>\n

Question 10.<\/span>
\nEvaluate:
\n\"Selina
\nSolution:
\n<\/span>\"Selina
\n\"Selina
\n\"Selina<\/p>\n

Rational Numbers Exercise 1C – Selina Concise Mathematics Class 8 ICSE Solutions<\/h3>\n

Question 1.<\/span>
\nEvaluate:
\n\"Selina
\nSolution:
\n<\/span>\"Selina
\n\"Selina<\/p>\n

Question 2.<\/span>
\nMultiply:
\n\"Selina
\nSolution:
\n<\/span>\"Selina
\n\"Selina<\/p>\n

Question 3.<\/span>
\nEvaluate:
\n\"Selina
\nSolution:
\n<\/span>\"Selina
\n\"Selina
\n\"Selina<\/p>\n

Question 4.<\/span>
\nMultiply each rational number, given below, by one (1):
\n\"Selina
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 5.<\/span>
\nFor each pair of rational numbers, given below, verify that the multiplication is commutative:
\n\"Selina
\nSolution:
\n<\/span>\"Selina
\n\"Selina<\/p>\n

Question 6.<\/span>
\nWrite the reciprocal (multiplicative inverse) of each rational number, given below :
\n\"Selina
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 7.<\/span>
\nFind the reciprocal (multiplicative inverse) of:
\n\"Selina
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 8.<\/span>
\n\"Selina
\nSolution:
\n<\/span>\"Selina
\n\"Selina<\/p>\n

Question 9.<\/span>
\n\"Selina
\nSolution:
\n<\/span>\"Selina
\n\"Selina<\/p>\n

Question 10.<\/span>
\nName the multiplication property of rational numbers shown below :
\n\"Selina
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 11.<\/span>
\nFill in the blanks:
\n(i) The product of two positive rational numbers is always ……………
\n(ii) The product of two negative rational numbers is always ……………
\n(iii) If two rational numbers have opposite signs then their product is always …………..
\n(iv) The reciprocal of a positive rational number is ………. and the reciprocal of a negative rational number is ……………
\n(v) Rational number 0 has ………….. reciprocal.
\n(vi) The product of a rational number and its reciprocal is ………..
\n(vii) The numbers ……….. and ……….. are their own reciprocals.
\n(viii) If m is reciprocal of n, then the reciprocal of n is ………….
\nSolution:
\n<\/span>\"Selina<\/p>\n

Rational Numbers Exercise 1D – Selina Concise Mathematics Class 8 ICSE Solutions<\/h3>\n

Question 1.<\/span>
\nEvaluate:
\n\"Selina
\nSolution:
\n<\/span>\"Selina
\n\"Selina
\n\"Selina
\n\"Selina<\/p>\n

Question 2.<\/span>
\nDivide:
\n\"Selina
\nSolution:
\n<\/span>\"Selina
\n\"Selina<\/p>\n

Question 3.<\/span>
\nThe product of two rational numbers is -2. If one of them is \\(\\frac { 4 }{ 7 }\\), find the other.
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 4.<\/span>
\nThe product of two numbers is \\(\\frac { -4 }{ 9 }\\). If one of them is \\(\\frac { -2 }{ 27 }\\), find the other.
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 5.<\/span>
\nm and n are two rational numbers such that
\n\"Selina
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 6.<\/span>
\nBy what number must \\(\\frac { -3 }{ 4 }\\) be multiplied so that the product is \\(\\frac { -9 }{ 16 }\\) ?
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 7.<\/span>
\nBy what number should \\(\\frac { -8 }{ 13 }\\) be multiplied to get 16?
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 8.<\/span>
\nIf 3\\(\\frac { 1 }{ 2 }\\) litres of milk costs \u20b949, find the cost of one litre of milk?
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 9.<\/span>
\nCost of 3\\(\\frac { 2 }{ 5 }\\) metre of cloth is \u20b988\\(\\frac { 1 }{ 2 }\\). What is the cost of 1 metre of cloth?
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 10.<\/span>
\nDivide the sum of \\(\\frac { 3 }{ 7 }\\) and \\(\\frac { -5 }{ 14 }\\) by \\(\\frac { -1 }{ 2 }\\).
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 11.
\n<\/span>\"Selina
\nSolution:
\n<\/span>\"Selina
\n\"Selina
\n\"Selina<\/p>\n

Question 12.<\/span>
\nThe product of two rational numbers is -5. If one of these numbers is \\(\\frac { -7 }{ 15 }\\), find the other.
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 13.
\n<\/span>Divide the sum of\u00a0\\(\\frac{5}{8}\\) and\u00a0\\(\\frac{-11}{12}\\) by the difference of\u00a0\\(\\frac{3}{7}\\) and\u00a0\\(\\frac{5}{14}\\)
\nSolution:
\n<\/span>\"Selina
\n\"Selina<\/p>\n

Rational Numbers Exercise 1E – Selina Concise Mathematics Class 8 ICSE Solutions<\/h3>\n

Question 1.
\n<\/span>\"Selina
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 2.
\n<\/span>\"Selina
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 3.<\/span>
\nInsert one rational number between (0 7 and 8 (ii) 3.5 and 5
\n(i) 2 and 3.2
\n(ii) 3.5 and 5
\n(iii) 2 and 3.2
\n(iv) 4.2 and 3.6
\n(v) \\(\\frac { 1 }{ 2 }\\) and 2
\nSolution:
\n<\/span>\"Selina<\/p>\n

Question 4.<\/span>
\nInsert two rational numbers between
\n(i) 6 and 7
\n(ii) 4.8 and 6
\n(iii) 2.7 and 6.3
\nSolution:
\n<\/span>\"Selina
\n\"Selina<\/p>\n

Question 5.<\/span>
\nInsert three rational numbers between
\n(i) 3 and 4
\n(ii) 10 and 12
\nSolution:<\/span>
\n\"Selina<\/p>\n

Question 6.<\/span>
\nInsert five rational numbers between \\(\\frac { 3 }{ 5 }\\) and \\(\\frac { 2 }{ 5 }\\)
\nSolution:<\/span>
\n\"Selina<\/p>\n

Question 7.<\/span>
\nInsert six rational numbers between \\(\\frac { 5 }{ 6 }\\) and \\(\\frac { 8 }{ 9 }\\)
\nSolution:<\/span>
\n\"Selina
\n\"Selina<\/p>\n

Question 8.<\/span>
\nInsert seven rational numbers between 2 and 3.
\nSolution:
\n<\/span>\"Selina<\/p>\n

Selina Concise Mathematics Class 8 ICSE Solutions<\/a><\/h4>\n","protected":false},"excerpt":{"rendered":"

Selina Concise Mathematics Class 8 ICSE Solutions Chapter 1 Rational Numbers Selina Publishers Concise Mathematics Class 8 ICSE Solutions Chapter 1 Rational Numbers Rational Numbers Exercise 1A – Selina Concise Mathematics Class 8 ICSE Solutions Question 1. Add, each pair of rational numbers, given below, and show that their addition (sum) is also a rational … Read more<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[3],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.learncram.com\/wp-json\/wp\/v2\/posts\/3158"}],"collection":[{"href":"https:\/\/www.learncram.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learncram.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learncram.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learncram.com\/wp-json\/wp\/v2\/comments?post=3158"}],"version-history":[{"count":3,"href":"https:\/\/www.learncram.com\/wp-json\/wp\/v2\/posts\/3158\/revisions"}],"predecessor-version":[{"id":25048,"href":"https:\/\/www.learncram.com\/wp-json\/wp\/v2\/posts\/3158\/revisions\/25048"}],"wp:attachment":[{"href":"https:\/\/www.learncram.com\/wp-json\/wp\/v2\/media?parent=3158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learncram.com\/wp-json\/wp\/v2\/categories?post=3158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learncram.com\/wp-json\/wp\/v2\/tags?post=3158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}