Adding and Subtracting Decimals

Front

What is a decimal?

Back

A decimal is a number that has a whole part and a fractional part, separated by a decimal point. 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 answer directly below the other decimal points.

Front

What is the result of 0.28 + 0.83?

Back

1.11

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 answer directly below the other decimal points.

Front

What is 1.37 + 0.5?

Back

1.87

Front

If Jerry bought 6.95 lbs of jelly beans and 1.75 lbs were cherry flavor, how do you find the lime flavor?

Back

Subtract the cherry flavor from the total: 6.95 - 1.75 = 5.2 lbs of lime flavor.

Front

What is the total height Paige grew if she grew 4.62 cm in the first year and 7.7 cm in the second year?

Back

Add the two heights: 4.62 + 7.7 = 12.32 cm.

Front

What is the sum of 8.30 kg and 1.8 kg?

Back

10.1 kg

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting the number to a nearby value that is simpler, often to a certain number of decimal places.

Front

What is the place value of the digit 5 in the number 3.45?

Back

The place value of 5 in 3.45 is 'tenths'.