Direction: Determine whether each is a proportion or not. Write Yes or No.
1. 5:15 = 3:9
2. 10:10 = 90:91
3. 25:50 = 1:2
4. 4:15 = 20 : 60
5. 2:3 = 45: 6
1. 5:15 = 3:9
2. 10:10 = 90:91
3. 25:50 = 1:2
4. 4:15 = 20 : 60
5. 2:3 = 45: 6
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5:15 = 3:9
Cross Multiplication:
Checking:
10:10 = 90:91
Cross Multiplication:
Checking:
25:50 = 1:2
Cross Multiplication:
Checking:
4:15 = 20:60
Cross Multiplication:
Checking:
2:3 = 45:6
Cross Multiplication:
Checking:
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