Adding and Subtracting Decimal Numbers

Front

What is a decimal number?

Back

A decimal number is a number that has a whole part and a fractional part, separated by a decimal point. For example, 4.5 is a decimal number.

Front

How do you add decimal numbers?

Back

To add decimal numbers, align the decimal points and add each column starting from the right, just like whole numbers.

Tags

CCSS.6.NS.B.3

Front

How do you subtract decimal numbers?

Back

To subtract decimal numbers, align the decimal points and subtract each column starting from the right, just like whole numbers.

Tags

CCSS.5.NBT.B.7

Front

What is the result of 4.32 - 1.83?

Back

2.49

Tags

CCSS.5.NBT.B.7

Front

What is the result of 3.42 + 4.78?

Back

8.20

Tags

CCSS.6.NS.B.3

Front

What is the result of 8.42 - 3.79?

Back

4.63

Tags

CCSS.5.NBT.B.7

Front

What is the result of 4.28 + 9.37?

Back

13.65

Tags

CCSS.6.NS.B.3

Front

What is the result of 4.72 - 2.58?

Back

2.14

Tags

CCSS.5.NBT.B.7

Front

What does it mean to 'carry' in addition?

Back

Carrying is when the sum of a column exceeds 10, and you move 1 to the next column on the left.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What does it mean to 'borrow' in subtraction?

Back

Borrowing is when you take 1 from the next column to help subtract when the top number is smaller than the bottom number.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2