*New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Rational Numbers self Practice 3A Solution*

**(1) Which of the following are not rational numbers?**

**(a) 2/-3**

**(b) 7/8**

**(c) -8/15**

**(d) 0**

**(e) -7/-18**

**(f) 0/3**

**(g) 5/0**

**(h) 0/0**

**(2) Express the following in the form p/q**

**(a) 4**

**(b) 2~1/5**

**(c) -8**

**(d) -2~3/7**

**(3) Are the rational numbers 2/3, 4/6, 6/9, 8/12, -10/-15, -42/-63 equivalent?**

**(4) Is the number 17/40 equivalent to -34/80 or 34/-80?**

**(5) Write the following rational numbers in standard form.**

**(a) 20/35**

**(b) -18/30**

**(c) 190/-76**

**SOLUTION Number 1, 2 & 3:**

**(6) Identify the positive and negative rational numbers.**

**(a) 5/13**

**(b) 11/-18**

**(c) -23/70**

**(d) -15/-8**

**(e) 0**

**(f) 7**

**(g) 7**

**(h) -12**

**(7) Write four rational numbers equivalent to each of the following rational numbers.**

**(a) 3/5**

**(b) -6/7**

**(c) 8/-9**

**(d) 2**

**(e) -1**

**(8) Express:**

**(a) 2/5 as a rational number with denominator 35.**

**(b) -8/11 as a rational number with (i) numerator 16, (ii) denominator 33**

**(c) 19/-5 as a rational number with (i) numerator 57, (ii) denominator 20**

**(9) Find x so that**

**(a) -2/15 = 16/x**

**(b) 8/-3 = x/9**

**(c) -35/x = -5**

**(10) Which of the following rational numbers are equivalent?**

**(a) 5/8 and 10/16**

**(b) -6/15 and 14/-35**

**(c) -9/-27 and -3/8**

**SOLUTION Number 6, 7, 8, 9 & 10:**

Please , Give solutions of ch -7 ,ratio and proportion and unitary method.

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