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| Mark yes or no for each pair or ratios below based on whether they are proportional. The first two are done for you. | ||
| 1 : 2 and 2 : 4
Proportional? yes |
1 : 4 and 2 : 7
Proportional? no |
2 : 6 and 1 : 3
Proportional? yes |
| 4 : 5 and 8 : 12
Proportional? no |
3 : 4 and 7 : 12
Proportional? no |
5 : 6 and 10 : 12
Proportional? yes |
| 7 : 10 and 21 : 30
Proportional? yes |
10 : 2 and 6 : 1
Proportional? no |
3 : 9 and 9 : 27
Proportional? yes |
| Answer yes or no to the questions below based on whether the prices are directly proportional. | ||
| 1 can of juice for $2.00 and 4 cans for $6. no | ||
| 5 liters of paint for $12 and 10 liters for $24 yes | ||
| 75g of chocolate for $1.50 and 150g for $3.00 yes | ||
| 3 pairs of socks for $3.00 and 10 pairs for $8.00 no | ||
| 20 pencils for $2.00 and 50 pencils for $4.00 no | ||
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Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:
Analyze proportional relationships and use them to solve real-world and mathematical problems
- Converting percents (to/from decimals & fractions) (From Example/Guidance)
- How to calculate percentages (From Example/Guidance)
- Printable percentage worksheets (From Worksheet)
- Calculating Percentages in Two Steps e.g. Finding 10% of a value and then multiplying to find 40% (From Worksheet)
- Calculating Percentages in Steps e.g. Finding 10%, then 5% and adding to find 15% (From Worksheet)
- Changing Recipe Quantities (e.g. serves 4 so change quantities to serve 6 etc.) (From Worksheet)
- Calculating with Percent e.g. 35% of 180 is ? (From Lesson)
- Calculating with Percent e.g. 16 out of 50 is what % & 12 is 40% of ? (From Lesson)