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On March 11, 2024, 11:35 AM

Exercise 9.2 - Chapter 9 Rational Numbers class 7 ncert solutions Maths - SaraNextGen [2024]


Question 1:

Find the sum:

(i) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_mb48c232.gif  (ii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_6bf0e59e.gif  (iii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_4c6a6c1e.gif

(iv) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_m695fbe3d.gif  (v) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_m2d81c7f.gif  (vi) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_1d8a2c50.gif

(vii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_175320a7.gif

Answer:

(i)

45+-11  4 = 45-11  4 = 16-5520 = -39   20(ii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_m6bf3897b.gif

L.C.M of 3 and 5 is 15.

https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_m490f8541.gif

(iii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_46771e15.gif

L.C.M of 10 and 15 is 30.

https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_75bd5762.gif

(iv) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_m2373ea55.gif  https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_50fca02f.gif

L.C.M of 11 and 9 is 99.

https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_1742591f.gif

(v) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_m77a849a4.gif

L.C.M of 19 and 57 is 57.

https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_1b1919dc.gif

(vi) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_m4d7935c6.gif

(vii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_m54e2ec86.gif  = https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_5e5a7aaf.gif

L.C.M of 3 and 5 is 15.

https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1431/Chapter%209_html_m522b30b8.gif

Question 2:

Find

(i) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_7c7a5c85.gif  (ii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_36753a27.gif  (iii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_433a7cdc.gif

(iv) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_14e96220.gif  (v) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_2a78a559.gif

Answer:

(i) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_454fa79d.gif

L.C.M of 24 and 36 is 72.

https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_1892ff2e.gif

(ii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_m52b04ddf.gif https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_2d98de81.gif

L.C.M of 63 and 7 is 63.

https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_1685538b.gif

(iii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_m2d673292.gif https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_me83abc6.gif

L.C.M of 13 and 15 is 195.

https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_6b7bd54f.gif

(iv) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_44ef9dae.gif

L.C.M of 8 and 11 is 88.

https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_32e7211e.gif

(v) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_3e37391c.gif https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_m3c7e5968.gif

L.C.M of 9 and 1 is 9.

https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1432/Chapter%209_html_m49c4cabf.gif

Question 3:

Find the product:

(i) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1434/Chapter%209_html_7b6098c9.gif  (ii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1434/Chapter%209_html_4f85d0c9.gif  (iii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1434/Chapter%209_html_621767da.gif

(iv) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1434/Chapter%209_html_m16b685d4.gif  (v) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1434/Chapter%209_html_47bf9f4.gif  (vi) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1434/Chapter%209_html_6a2749bb.gif

Answer:

(i) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1434/Chapter%209_html_44b405cc.gif

(ii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1434/Chapter%209_html_m738ac161.gif

(iii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1434/Chapter%209_html_5d696299.gif

(iv) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1434/Chapter%209_html_m242036a9.gif

(v) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1434/Chapter%209_html_77bbd9d8.gif

(vi) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1434/Chapter%209_html_1a084082.gif

Question 4:

Find the value of:

(i) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1436/Chapter%209_html_3749ca63.gif  (ii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1436/Chapter%209_html_m495bf265.gif  (iii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1436/Chapter%209_html_m3b407213.gif

(iv) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1436/Chapter%209_html_m26a6ed2.gif  (v) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1436/Chapter%209_html_3bf32fe2.gif  (vi) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1436/Chapter%209_html_77329394.gif

(vii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1436/Chapter%209_html_m3f69be07.gif

Answer:

(i) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1436/Chapter%209_html_m2729495a.gif

(ii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1436/Chapter%209_html_m4a4bb278.gif

(iii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1436/Chapter%209_html_m138050c0.gif

(iv) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1436/Chapter%209_html_m2b797a77.gif

(v) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1436/Chapter%209_html_5fb37a2c.gif

(vi) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1436/Chapter%209_html_81d2dd8.gif

(vii) https://img-nm.mnimgs.com/img/study_content/curr/1/7/3/39/1436/Chapter%209_html_1ff07aaf.gif

Also Read : Exercise-10.1-Chapter-10-Practical-Geometry-class-7-ncert-solutions-Maths

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