Question

Mrs. Taylor’s science class counted the number of each bird in the schoolyard.

The table shows the results. Mrs. Taylor made a bar graph. Each grid line represents 2 birds.
The bar for Cardinal is 2 grid lines higher than the bar for Carolina wren. How many cardinals did the class see?

Type of Bird Number of Birds
Carolina Wren 6
Eastern Towhee 14
European Starling 9
Cardinal ___?

Answer 1

Explanation:

If each grid line on the bar graph represents 2 birds, then the difference of 2 grid lines between the bar for Cardinal and Carolina Wren represents:

2 grid lines x 2 birds/grid line = 4 birds

Therefore, the number of cardinals the class saw is:

Carolina Wren + 4 birds = 6 birds + 4 birds = 10 birds

So the class saw 10 Cardinals.