New Learning Composite Mathematics Class 5 S.K. Gupta Anubhuti Gangal Fractions Chapter 7B Solutions
New Learning Composite Mathematics Class 5 S.K. Gupta Anubhuti Gangal Fractions Chapter 7B Solutions by expert Math Teacher.
(1) Add the following and give your answer in simplest form.
(a) 3/5 + 1/10
= (6+10)/10 (LCM of 5 and 10 is 10)
= 16/10
= 8/5 (After simplify)
(b) 2/3 + 1/9
= (6+1)/9 (LCM of 3 and 9 is 9)
= 7/9
(c) 5/9 + 2/3
= (5+6)/9 (LCM of 9 and 3 is 3)
= 11/9
(d) 5/12 + ½
= (5+6)/12 (LCM of 12 and 2 is 12)
= 11/12
(e) 5/16 + 7/18
= (90+112)/288 (LCM of 16 and 18 is 288)
= 202/288
= 101/144 (After simplify)
(f) 1/3 + ¼ + 1/12
= (4+3+12)/12 (LCM of 3, 4 and 12 is 12)
= 19/12
(g) 3/5 + 2/10 + ½
= (6+2+5)/10 (LCM of 5, 10 and 2 is 10)
= 13/10
(h) 3/5 + 2/15 + 3/10
= (18+4+9)/30 (LCM of 5, 15 and 10 is 30)
= 31/30
(i) 2/3 + ¾ + 9/12
= (8 + 9 + 9)/12 (LCM of 3, 4 and 12 is 12)
= 26/12
= 13/6 (After Simplify)
(j) 1/3 + 4/5 + 11/15
= (5+12+11)/15 (LCM of 3, 5 and 15 is 15)
= 28/15
(k) 5/14 + 19/21 + 47/84
= (30+76+47)/84 (LCM of 14, 21 and 84 is 84)
= 153/84
(2) Subtract the following and give your answer in simplest form.
(a) 2/3 – ¼
= (8-3)/12 (LCM of 3 and 4 is 12)
= 5/12
(b) 7/8 – 5/20
= (35-10)/40 (LCM of 8 and 20 is 40)
= 25/40
= 5/8 (After simplify)
(c) 9/10 – 11/20
= (18-11)/20 (LCM of 10 and 20 is 20)
= 7/20
(d) 11/12 – 2/9
= (33-8)36 (LCM of 12 and 9 is 36)
= 26/36
= 13/18 (After simplify)
(e) 5/12 – 3/16
= (20 – 9)/48 (LCM of 12 and 16 is 48)
= 11/48
(f) 4/14 – 4/21
= (12 – 8)/42 (LCM of 14 and 21 is 42)
= 4/42
= 2/21 (After simplify)
(g) 15/24 – 19/36
= (45 – 38)/72 (LCM of 24 and 36 is 72)
= 7/72
(h) 8/10 – 1/5 – ½
= (8 – 2 – 5)/10 (LCM of 10, 5 and 2 is 10
= 1/10
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