Mastering Adding and Subtracting Decimals

Lining up the numbers to the right

Using only whole numbers

Starting with the largest number

Lining up the decimal points

Between the 7 and 3

Between the 7 and 2

Between the 3 and 2

Between the 2 and 6

To make the numbers look bigger

To avoid adding the wrong digits

To ensure the decimals are aligned

To make the addition easier

14.56

14.36

14.06

14.66

Between the 3 and 7

Between the 0 and 8

Between the 1 and 0

Between the 1 and 5

To make the subtraction easier

To ensure the decimals are aligned

To make the numbers look bigger

To avoid subtracting the wrong digits

Regroup the numbers

Subtract the numbers as they are

Add zeros to the numbers

Drop the decimal point in the difference

11.38

12.38

13.38

10.38

To avoid subtracting the wrong digits

Because 0 is smaller than 7

To ensure the decimals are aligned

To make the subtraction easier

Add zeros to the numbers

Regroup the numbers

Drop the decimal point in the difference

Add the numbers