Question

d) 7.1/2 : 1.11/14 - 1.2/5 * 15/28=

e) 5.1/3 : 2.2/15 - (1.3/4 - 6.1/4 * 1/6)=

f) (1.1/8 + 3.5/6 * 5/23) - (4.1/3 : 26 + 1.1/4)

Answer 1

d) 7.1/2 : 1.11/14 - 1.2/5 * 15/28= 15/2 : 25/14 - 7/5 * 15/28 = 15/2 * 14/25 - 3/4 = 4.1/5 - 3/4 = 4.4/20 - 15/20 = 3.24/20 - 15/20 = 3.14/20 = 3.7/10

e) 5.1/3 : 2.2/15 - (1.3/4 - 6.1/4 * 1/6)= 16/3 : 32/15 - (7/4 - 25/4 * 1/6) = 16/3 * 15/32 - (7/4 - 25/24) = 5/2 - (1.3/4 - 1.1/24) = 2.1/2 - (1.18/24 - 1.1/24) = 2.1/2 - 17/24 = 2.12/24 - 17/24 = 1.36/24 - 17/24 = 1.19/24

f) (1.1/8 + 3.5/6 * 5/23) - (4.1/3 : 26 + 1.1/4) = (1.1/8 + 23/6 * 5/23) - (13/3 * 1/26 +1.1/4) = (1.1/8 + 5/6) - (1/2 + 1.1/4) = (1.3/24 + 20/24) - (2/4 + 1.1/4)= 1.23/24 - 1.3/4= 1.23/24 - 1.18/24 = 5/24

Answer 2

d) 7 1/2 : 1 11/14 - 1 2/5* 15/28= 15/2 * 14/25 - 7/5 * 15/28= 21/5 - 3/4 = 44/20 - 15/20 = 29/20 = 1 9/20

e) 5.1/3 : 2.2/15 - (1.3/4 - 6.1/4 * 1/6)=16/3 * 15/32 - (7/4 - 25/4 * 1/6)=

5/2 - ( 7/4 - 25/24) = 5/2 - (42/24 - 25/24) = 5/2 - 17/24 = 30/24 - 17/24 = 13/24

f) (1.1/8 + 3.5/6 * 5/23) - (4.1/3 : 26 + 1.1/4) = 9/8 + 23/6 * 5/23)- (13/3:26 +5/4) = 9/8 + 5/6 - ( 13/3 * 1/26 + 5/4 ) = 9/8 + 5/6 - 1/6 - 5/4 = 27/24 + 20/ 24 - 4/24 - 30/24 = 13/24