{"id":1204,"date":"2023-11-16T04:40:17","date_gmt":"2023-11-15T23:10:17","guid":{"rendered":"https:\/\/wordpress-505192-1602719.cloudwaysapps.com\/?p=1204"},"modified":"2023-11-17T14:19:28","modified_gmt":"2023-11-17T08:49:28","slug":"samacheer-kalvi-7th-maths-term-1-chapter-1-ex-1-4","status":"publish","type":"post","link":"https:\/\/samacheerguru.com\/samacheer-kalvi-7th-maths-term-1-chapter-1-ex-1-4\/","title":{"rendered":"Samacheer Kalvi 7th Maths Solutions Term 1 Chapter 1 Number System Ex 1.4"},"content":{"rendered":"

Students can Download Maths Chapter 1 Number System Ex 1.4 Questions and Answers, Notes Pdf, Samacheer Kalvi 7th Maths Book Solutions<\/a> Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.<\/p>\n

Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 1 Chapter 1 Number System Ex 1.4<\/h2>\n

Question 1.
\nFill in the blanks.
\n(i) (-40) \u00f7 ___ =40
\n(ii) 25 \u00f7 ____ = -5
\n(iii) ____ \u00f7 (-4) = 9
\n(iv) (-62) \u00f7 (-62) = ____
\nSolution:
\n(i) -1
\n(ii) -5
\n(iii) -36
\n(iv) 1<\/p>\n

Question 2.
\nSay True or False:
\n(i) (-30) \u00f7 (-6) = -6
\n(ii) (-64) \u00f7 (-64) is 0
\nSolution:
\n(i) False
\n(ii) False<\/p>\n

Question 3.
\nFind the values of the following.
\n(i) (-75) \u00f7 5
\n(ii) (-100) \u00f7 (-20)
\n(iii) 45 \u00f7 (-9)
\n(iv) (-82) \u00f7 82
\nSolution:
\n(i) \\(\\frac{-75}{5}\\) = -15
\n(ii) \\(\\frac{-100}{-20}\\) = 5
\n(iii) \\(\\frac{45}{-9}\\) = -5
\n(iv) \\(\\frac{-82}{82}\\) = -1<\/p>\n

Question 4.
\nThe product of two integers is -135. If one number is -15. Find the other integer.
\nSolution:
\nGiven the product of two integers = -135
\nOne of them = -15
\n\u2234 -15 \u00d7 Another number = -135
\nOther number = \\(\\frac{-135}{-15}\\) = 9
\n\u2234 The other number = 9.<\/p>\n

\"Samacheer<\/p>\n

Question 5.
\nIn 8 hours duration, with uniform decrease in temperature, the temperature dropped 24\u00b0C. How many degrees did the temperature drop each hour?
\nSolution:
\nIn 8 hours the drop in temperature = 24
\nIn 1 hour the drop in temperature = \\(\\frac{24}{8}\\) = 3\u00b0
\nThe temperature dropped 3\u00b0C every hour.<\/p>\n

Question 6.
\nAn elevator descends into a mine shaft at the rate of 5 m\/min. If the descent starts from 15 m above the ground level, how long will it take to reach -250 m?
\nSolution:
\nThe elevator\u2019s position = 15 m above ground level = +15 m
\nIt should reach = -250 m
\nThe distance to be travelled = 15 – (-250) m = 15 + (+250) m 265 m
\nTime taken to descend 5 m = 1 min
\n\u2234 Time required to descend 265 m = \\(\\frac{24}{8}\\) = 53 min<\/p>\n

Question 7.
\nA person lost 4800 calories in 30 days. If the calory loss is uniform, calculate the loss of calory per day.
\nSolution:
\nLoss of calory in 30 days = 4800
\n\u2234 Loss of calory in 1 day = \\(\\frac{4800}{30}\\) = 160 calories
\n\u2234 160 calories lost per day.<\/p>\n

Question 8.
\nGiven 168 \u00d7 32 = 5376 then fined (-5376) \u00f7 (-32).
\nSolution:
\nGiven 168 \u00d7 32 = 5376
\n\u2234 \\(\\frac{5376}{32}\\) = 168
\nAlso, \\(\\frac{-5376}{-32}\\) = 168<\/p>\n

\"Samacheer<\/p>\n

Question 9.
\nHow many -4\u2019s are there is (-20)?
\nSolution:
\nNumber of -4\u2019s in (-20) = \\(\\frac{-20}{-4}\\) = 5<\/p>\n

Question 10.
\n(-400) divided into 10 equal parts gives ____
\nSolution:
\n\\(\\frac{-400}{10}\\) = -4<\/p>\n

Objective Type Questions<\/span><\/p>\n

Question 11.
\nWhich of the following does not represent an integer?
\n(i) 0 \u00f7 (-7)
\n(ii) 20 \u00f7 (-4)
\n(iii) (-9) \u00f7 3
\n(iv) 12 \u00f7 5
\nSolution:
\n(iv) 12 \u00f7 5<\/p>\n

Question 12.
\n(-16) \u00f7 4 is the same as
\n(i) -(-16 \u00f7 -4)
\n(ii) -(16) \u00f7 (-4)
\n(iii) 16 \u00f7 (-4)
\n(iv) -4 \u00f7 -16
\nSolution:
\n(iii) 16 \u00f7 (-4)<\/p>\n

\"Samacheer<\/p>\n

Question 13.
\n(-200) \u00f7 10 is
\n(i) 20
\n(ii) -20
\n(iii) -190
\n(iv) 210
\nSolution:
\n(ii) 20<\/p>\n

Question 14.
\nThe set of integers is not closed under
\n(i) Addition
\n(ii) Subtraction
\n(iii) Multiplication
\n(iv) Division
\nSolution:
\n(iv) Division<\/p>\n","protected":false},"excerpt":{"rendered":"

Students can Download Maths Chapter 1 Number System Ex 1.4 Questions and Answers, Notes Pdf, Samacheer Kalvi 7th Maths Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations. Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 1 Chapter 1 Number System Ex 1.4 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":""},"categories":[5],"tags":[],"blocksy_meta":"","jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/samacheerguru.com\/wp-json\/wp\/v2\/posts\/1204"}],"collection":[{"href":"https:\/\/samacheerguru.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/samacheerguru.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/samacheerguru.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/samacheerguru.com\/wp-json\/wp\/v2\/comments?post=1204"}],"version-history":[{"count":1,"href":"https:\/\/samacheerguru.com\/wp-json\/wp\/v2\/posts\/1204\/revisions"}],"predecessor-version":[{"id":55056,"href":"https:\/\/samacheerguru.com\/wp-json\/wp\/v2\/posts\/1204\/revisions\/55056"}],"wp:attachment":[{"href":"https:\/\/samacheerguru.com\/wp-json\/wp\/v2\/media?parent=1204"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/samacheerguru.com\/wp-json\/wp\/v2\/categories?post=1204"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/samacheerguru.com\/wp-json\/wp\/v2\/tags?post=1204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}