7th Grade Math STAAR Review

Front

What does 144% represent in decimal form?

Back

1.44

Front

If a scientist observes dolphins for 1.25 hours every 2 days, how many hours will they observe in 6 days?

Back

1.25 hours/2 days * 6 days = 3.75 hours observing dolphins.

Front

How do you calculate the cost of oil used if 60% of a 25-ounce bottle costing $5.88 is used?

Back

Cost of oil used = 60% of $5.88 = $3.53.

Front

What is the total distance of 14 laps if each lap is 400 yards?

Back

Total distance = 14 laps * 400 yards/lap = 5600 yards.

Front

How do you find the percentage of a total completed?

Back

Percentage completed = (part/total) * 100.

Front

What is the expression for multiplying a negative number by a positive number?

Back

The expression is -4 * 5.

Front

How do you convert a percentage to a fraction?

Back

Divide the percentage by 100 and simplify.

Front

What is the total time spent observing dolphins and sea lions in 6 days if the scientist spends 1.25 hours on dolphins and 3.5 hours on sea lions every 2 days?

Back

Total time = (1.25 + 3.5) hours/2 days * 6 days = 14.25 hours.

Front

What is the formula to calculate the cost per ounce of a bottle of oil?

Back

Cost per ounce = Total cost / Total ounces.

Front

How do you express 1.25 as a fraction?

Back

1.25 = 5/4.