Question 1: Subtract the first rational number from the second in each of the following:
Answer :
(i)
(ii)
(iii)
(iv)
(v)
(vi)
(vii)
(viii)
Question 2: Evaluate each of the following:
Answer :
(i)
(ii)
(iii)
(iv)
(v)
(vi)
(vii)
(viii)
(ix)
(x)
(xi)
Question 3: The sum of the two numbers is 5/9.59. If one of the numbers is 1/3,13, find the other.
Answer :
It is given that the sum of two numbers is 5/9, where one of the numbers is 13.Let the other number be x.
Question 4: The sum of two numbers is -1/3.-13. If one of the numbers is -12/3,-123, find the other.
Answer : It is given that the sum of two numbers is-1/3, where one of the numbers is −12/3.Let the other number be x.
Question 5: The sum of two numbers is -4/3.-43. If one of the numbers is −5, find the other.
Answer :
It is given that the sum of two numbers is −4/3, where one of the numbers is −5.Let the other number be x.
Question 6: The sum of two rational numbers is −8. If one of the numbers is -15/7,-157, find the other.
Answer :
It is given that the sum of two rational numbers is −8, where one of the numbers is −15/7.Let the other rational number be x.
Therefore,theotherrationalnumberis -41/7.
Question 7: What should be added to -7/8 so as to get 5/9?
Answer : Let x be added to -7/8 so as to get 5/9.
Question 8: What number should be added to -5/11-511 so as to get 26/33 ?
Answer : Let x be added.
Question 9: What number should be added to -5/7 to get -2/3?
Answer : Let x be added.
Question 10: What number should be subtracted from -5/3 to get 5/6?
Answer : Let x be subtracted.
Question 11:What number should be subtracted from 3/7 to get 5/4?
Answer : Let, x be subtracted.
Question 12: What should be added to (2/3+3/5) to get −2/15?
Answer : Let x be added.
Question 13: What should be added to (1/2+1/3+1/5) to get 3?
Answer : Let x be added.
Question 14:What should be subtracted from (3/4−2/3) to get −1/6?
Answer : Let x be subtracted.
Question 15: Fill in the blanks:
Answer :
(i)
(ii)
(iii)
(iv)
1. What are rational numbers? |
2. How do you determine if a number is rational or not? |
3. Can all fractions be considered as rational numbers? |
4. Are whole numbers and integers also rational numbers? |
5. How can rational numbers be represented on a number line? |
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