Adding and Subtracting Decimal Numbers

Front

What is the sum of 79.3 and 10.21?

Back

89.51

Front

How do you read the number 8.097?

Back

Eight and ninety-seven thousandths.

Front

What is the sum of 15.8 and 4.99?

Back

20.79

Front

What is the difference of 17 and 1.2?

Back

15.8

Front

What is the total mass of two rocks weighing 41.4 grams and 74.3 grams?

Back

115.7 grams.

Front

What is a decimal number?

Back

A number that includes a decimal point, representing a fraction of a whole.

Front

How do you align decimal numbers when adding or subtracting?

Back

Align the decimal points vertically.

Front

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

Back

0.05 (five hundredths).

Front

What is the difference between hundredths and thousandths in decimal numbers?

Back

Hundredths are two places to the right of the decimal, while thousandths are three places to the right.

Front

If you add 0.5 and 0.25, what is the result?

Back

0.75