Adding and Subtracting Decimals Review

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part. For example, 3.14 is a decimal.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the difference directly below the other decimal points.

Front

What is the difference between 16 and 12.3?

Back

The difference is 3.7.

Front

How do you find the total cost of items?

Back

To find the total cost, add the prices of all items together.

Front

If Abby buys a shirt for $30.03 and a hat for $20.52, how much change does she get from $100.00?

Back

She receives $49.45 in change.

Front

What is the total weight of 12.4 pounds of Mandarin oranges and 5.93 pounds of Valencia oranges?

Back

The total weight is 18.33 pounds.

Front

How do you calculate the difference in time between two events?

Back

To calculate the difference in time, subtract the shorter time from the longer time.

Front

If the men's world record for the 100 yard dash is 9.58 seconds and the women's is 10.5 seconds, how much faster did the man run?

Back

The man ran 0.92 seconds faster.

Front

What is the total distance of three jumps measuring 16.5 feet, 19.3 feet, and 17.85 feet?

Back

The total distance is 53.65 feet.