Question

No 3 a b c d e.......

Answer 1

A. 4/30 -15/30 +9/30 = -2/30

b. 18/42 + 8/42 - 39/42 = -13/42

c. 4 24/60 - 1 20/60 = 3 4/60 + 2 45/60 = 5 49/60

d. 10 6/24 + 1 16/24 + 20 21/24 = 31 42/24 = 32 18/24 = 32 3/4

e. 2,25 + 0,25 + 1,5 = 4

Answer 2

A. 1/15 - 1/2 + 3/10 = 2/30 - 15/30 + 9/30 = (-4/30) = (-2/15)
B. 3/7 + 4/21-13/14 = 18/42 + 8/42 - 39/42 = (-13/42)
C. 4 2/5 - 1 1/3 + 2 3/4 = 4 30/60 - 1 20/60 + 2 45/60 = 6 55/60 = 6 11/12
D. 10 1/4 + 1 2/3 + 20 7/8 = 10 6/24 + 1 16/24 + 20 21/24 = 32 19/24
E. 2,25 + 25% + 1 1/2 = 2 1/4 + 1/4 + 1 2/4 = 4 4/4 = 5