The rule of four

Maths

Fill in the gap: If two quantities are in the same ratio then there are _______ relationships I can use to find a missing value.

Lots of the same groups of yellow and red counters are put in a bag. Fill in the missing value in the ratio table.

Yellow and red counters are in the ratio 2 : 3. What fraction of the counters are yellow?

Fill in the gaps: If the proportion between the ____________ is constant, then the ratios are __________________.

The ratio of the top bar is 1 : 5 : 2. What is the equivalent ratio shown on the bottom bar?

Squash and water are mixed in the following ratios to make a drink. Which drinks will taste the same?   A) 4:10   B) 3:8    C) 9:24    D) 15:25

Light green paint is mixed with green : white as         2: 5. What ratio would be needed for 12 units of green?

Light green paint is mixed with green : white as         2: 5. Write the ratio for the white paint needed for 1 unit of green.