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6. 7/20 ... persen ?
= (7 × 5)/(20 × 5)
= 35/100
= 35%
7. 78 dibulatkan menjadi 80
8. 28,345 = 28,200
9. 53 + 27
= 50 + 20
= 70
10. 42 × 19
= 40 × 20
= 840
_________________
1. a. 1/3
b. 2/7
c. 3/6 = 1/2
2. a. 32/15 = 2 2/15
b. 17/10 = 1 7/10
c. 27/23 = 1 4/23
3. a. 3/10 = (3 × 10)/(10 × 10) = 30/100 = 30%
b. 21/25 = 84/100 = 84%
c. 34/50 = 68/100 = 68%
4. a. 25% = 25/100 = 1/4
b. 50% = 50/100 = 1/2
c. 80% = 80/100 = 4/5
d. 65% = 65/100 = 13/20
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