1.25/8+3,125-21/5= 2.6,38-36/7+33/100= 3.69/4-15,125+9/100= 4.8,44-64/9+0,376=

1. 25/8 = 3,125
21/5 = 4,2
3,125 + 3,125 - 4,2 = 2,05

2. 36/7 = 5,14
33/100 = 0,33
6,38 - 5,14 + 0,33 = 1,57

3. 69/4 = 17,25
9/100 = 0,09
17,25 - 15,125 + 0,09 = 2,125

4. 64/9 = 7,11
8,44 - 7,11 + 0,376 = 1,706

semoga membantu

1. 25/8 + 3,125 - 21/5

25/8 + 3.125/1.000 - 21/5

25×1.000×5/8×1.000×5 + 3.125×8×5/1.000×8×5 - 21×1.000×8/5×1.000×8

125.000/40.000 + 125.000/40.000 - 168.000/40.000

82.000÷1.000/40.000÷1.000

82÷2/40÷2

41/20

pecahan campuran = 2 1/20

desimal = 2,05



2. 6,38 - 36/7 + 33/100

638/100 - 36/7 + 33/100

638×7×100/100×7×100 - 36×100×100/7×100×100 + 33×7×100/100×7×100

446.600/70.000 - 360.000/70.000 + 23.100/70.000

109.700÷100/70.000÷100

1.097/700

pecahan campuran = 1 397/700

Desimal = 1,57



3. 69/4 - 15,125 + 9/100

69/4 - 15.125/1.000 + 9/100

69×1.000×100/4×1.000×100 - 15.125×4×100/1.000×4×100 + 9×1.000×4/100×1.000×4

6.900.000/400.000 - 6.050.000/400.000 + 36.000/400.000

886.000÷1.000/400.000÷1.000

886÷2/400÷2

443/200

pecahan canpuran = 2 43/200

desimal = 2,215



4. 8,44 - 64/9 + 0,376

844/100 - 64/9 + 376/1.000

844×9×1.000/100×9×1.000 - 64×100×1.000/9×100×1.000 + 376×9×100/1.000×9×100

7.596.000/900.000 - 6.400.000/900.000 + 338.400/900.000

1.534.400÷100/900.000÷100

15.344÷8/9.000÷8

1.918/1.125

pecahan campuran = 1 793/1.125

desimal = 1,70