12. 4,38 - 1,98
= 438/100 - 198/100
= 240/100
= 12/5 = 2 2/5
Jawabannya B
13. 7,5 - 2 3/4
= 75/10 - 11/4
= 15/2 - 11/4
= 15x2/2x2 - 11x1/4x1
= 30/4 - 11/4
= 19/4 = 4,75jawabannya B
14. 5/12 x 4/5
= 5x4/12x5
= 20/60 = 1/3
Jawabannya C
15. 4 3/4 x 1 4/5
= 19/4 x 9/5
= 171/20 = 8 11/20
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12. 4,38 - 1,98
= 438/100 - 198/100
= 240/100
= 12/5 = 2 2/5
Jawabannya B
13. 7,5 - 2 3/4
= 75/10 - 11/4
= 15/2 - 11/4
= 15x2/2x2 - 11x1/4x1
= 30/4 - 11/4
= 19/4 = 4,75
jawabannya B
14. 5/12 x 4/5
= 5x4/12x5
= 20/60 = 1/3
Jawabannya C
15. 4 3/4 x 1 4/5
= 19/4 x 9/5
= 171/20 = 8 11/20