Operations on Rational Numbers Class 7 Maths Chapter 5 Practice Set 23 Solutions Maharashtra Board

Operations on Rational Numbers Class 7 Maths Chapter 5 Practice Set 23 Solutions Maharashtra Board

Std 7 Maths Practice Set 23 Solutions Answers

Question 1.
Write three rational numbers that lie between the two given numbers.
i. 27,67
ii. 45,23
iii. −23,45
iv. 79,−59
v. −34,+54

Maharashtra state board textbooks

vi. 78,−53
vii. 57,117
viii. 0,−34
Solution:
i. 27,67
The three numbers lying between 27 and 67 are 37,47,57

ii. 45,23
45=2430,23=2030
The three numbers between 45 and 23 are 2130,2230,2330

iii. −23,45
−23=−1015,45=1215
The three numbers between −23 and 45 are −915,−715,415

iv. 79,−59
The three numbers between 79 and −59 are 69,0,−49

v. −34,+54
The three numbers between −34 and +54 are −24,−14,34

vi. 78,−53
78=2124,−53=−4024
The three numbers between 78 and −53 are 1724,1124,−1324

vii. 57,117
The three numbers between 57 and 117 are 67,87,97

viii. 0,−34
The three numbers between 0 and −34 are −18,−28,−58

Maharashtra Board Class 7 Maths Chapter 5 Operations on Rational Numbers Practice Set 23 Intext Questions and Activities

Maharashtra state board textbooks

Question 1.
Answer the following questions: ( Textbook pg. no. 36)

1. Write all the natural numbers between 2 and 9.
2. Write all the integers between -4, and 5.
3. Which rational numbers are there between 12 and 34 ?

Solution:

1. 3, 4, 5, 6, 7, 8
2. -3, -2, -1, 0, 1, 2, 3, 4
3. 12=1×22×2=24=2×104×10=2040
   34=3×104×10=3040
   ∴ The rational numbers between 12 and 34 are 2140,2240,2540,2740 etc.