Question

1. 10 1/8 - 5/6 - 6 9/12 = ...
a. 2 13/24 c. 4 8/12
b. 2 15/24 d. 4 10/12
2. 5/8 x 10/25 = ...
a. 7/8 c. 1/2
b. 3/4 d. 1/4
3. 3 1/13 x 5 3/15 = ...
a. 15 11/15 c. 16
b. 15 12/13 d. 16 1/15
4. 5 5/6 x 12/18 x 3 1/5 = ...
a. 12 2/8 c. 13 4/18
b. 12 4/9 d. 15 1/5
5. 10 : 4 3/8 = ...
a. 2 1/8 c. 1 5/7
b. 2 2/7 d. 1 3/8
Maaf kepanjangan

Answer 1

(1) 10 1/8 - 5/6 - 6 9/12 = n
81/8 - 5/6 - 81/12 = n
486/48 - 40/48 - 324 = n
n = 122/48
n = 2 26/48
n = 2 13/24
2 13/24 = A

( 2 ) 5/8 x 10/25 = n
50/200 = n
n = 1/4
1/4 = D

( 3 ) 3 1/13 x 5 3/15 = n
40/13 x 78/15 = n
3120/195 = n
n = 16
16 = C

( 4 ) 5 5/6 x 12/18 x 3 1/5 = n
35/6 x 12/18 x 16/5 = n
6720/540 = n
n = 336/27
n = 12 12/27
n = 12 4/9
12 4/9 = B

( 5 ) 10 : 4 3/8 = n
10/1 : 35/8 = n
10/1 x 8/35 = n
80/35 = n
n = 2 10/80
n = 2 1/8
2 1/8 = A

( 6 ) 6/14 : 3 3/6 = n
6/14 : 21/6 = n
6/14 x 6/21 = n
36/294 = n
n = 9/49
9/49 = D

( 7 ) 2 4/8 : 3 2/6 : 15/18 = n
20/8 : 20/6 : 15/18 = n
20/8 x 6/20 x 18/15 = n
2160/2400 = n
n = 9/10
9/10 = C