1-10 dengan caranya,tolong bantuannya

1. Cara : 45500 - 13125 = 32375
= 25875 ÷ 125 = 207
= 207 × 23 = 4761
= 32375 + 4761 = a. 37136

2. Cara : Dik = 24 botol
= isi = 4/5
Penyelesaian = 24 × 4/5 = 96/5 = 19 1.5 l

3. Cara : -768 ÷ 32 = -24
= -24 ×(-39) = 936
= -216 - 200 = -416
= -416 + 936 = 520

4. Cara : 16 m = 1600 cm
= 1600 ÷ 20 = 80 cm

5. Cara :2.375 ÷ 5/3 = 2375 × 3/5 = 1425
= 1.425 × 40% = 1425 × 4/10 = 0.57

6. Cara : Rata Rata = Jumlah Data ÷ Banyak Data
= 24 + 8 ÷ 2 = 16 hari

7. Cara :
kpk|32|40|48|
2 |16|20|24 KPK = 2×2×2×5×2×2×3
2 |8|10|12 =8×5×4×3
2 | 4|5|6 = 480
5 | 4|1|6
2 |2|1|3
2 |1|1|3
3 |1|1|1

8. Cara :
kpk 8|15|30
2 4|15|15 KPK = 8×3×5
2 2|15|15 = 120 hari
2 1|15|15 = 16 juni + 120 hari
3 1 |5|5 = a. 14 Oktober 2016
5 1|1|1

9. Cara :
2 1/5 = 11/5 = 55/25
0.75 = 75/100 = 18.75/25
68 % = 68/100 = 17/25
3/5 = 15/25
jawab = c. 3/5 ; 68% ; 0.75 ; 2 1/5

10. Cara :
kpk 56,72,96 fpb FPB = 8
2 28,36,48 2
2 14,18,24 2
2 7,9,12 2