Adding and Subtracting Decimals

Concepts

100

What should I do first when I add or subtract decimals?

Line up the Decimals

200

Where can you add zeros in a decimal?

beginning (23.49 - 07.43)

end (46.32 + 21.60)

300

At Kroger you bought chicken for $7.45 and corn for $2.99.  What should you do to calculate your total bill?

 add $7.45 + $2.99

400

You bought a pair of ear buds for $8.95.  You give the cashier $10.  What should you do to calculate your change?

subtract $10.00 - $8.95

500

Line up these decimals:

4.5 - 2.338

  4.500

- 2.338

Adding Decimals

100

4.56 +5.89 =

10.45

200

2.81 + 1.45 =

4.26

300

15.6 + 4.9 =

20.5

400

7.14 + 6.39 =

13.53

500

14.946 + 7.87 =

22.816

Subtracting Decimals

100

6.25 - 4.32 =

2.02

200

89.32 - 76.50 =

12.82

300

23.564 - 21.397 =

2.167

400

9.18 - 7.2 =

1.98

500

32.000 - 14.652 =

17.348