Adding and Subtracting Decimals

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.

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 1.7 + 1.5?

Back

3.2

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 the result of 6.4 - 2.9?

Back

3.5

Front

What does it mean to find the difference between two weights?

Back

Finding the difference between two weights means subtracting the lighter weight from the heavier weight to see how much more one weighs than the other.

Front

If Jeremy weighs 87 pounds and Tamara weighs 62.84 pounds, how much more does Jeremy weigh than Tamara?

Back

24.16 pounds.

Front

What is the total length of three pieces of wood measuring 7.6 m, 9.7 m, and 4.8 m?

Back

22.1 m.

Front

Is 0.82 + 0.46 equal to 12.8?

Back

False.

Front

What is the first step in adding decimals?

Back

Align the numbers by the decimal point.