1. Adding and Subtracting Decimals
Next Slide

2. Rules for adding or subtracting decimals:
(1) Line up the numbers by the decimal point.
Next Slide

3. Rules for adding or subtracting decimals:
(2) Annex zeros to make the same number of places behind the decimal point in all numbers in the problem.
Next Slide

4. Rules for adding or subtracting decimals:
(3) Add or subtract beginning on the far right side of the problem.
Next Slide

5. Rules for adding or subtracting decimals:
(4) Place the decimal point in the answer by bringing the decimal point straight down from the problem to the answer.
Next Slide

6. Examples: 1 1 1
48.6
27.35 00 8 8 . 3 4 4
Next Slide

7. Examples: 6 14 4 10
67.5 3 4 . 8 3
Next Slide

8. Now it is your turn Type your name and send:
Next Slide

9. Money Problems At the Cafe
Numeracy
Money Problems
At the
Cafe
Next Slide

10. Menu Four of us went to eat and we had: Soup of the day £1.50
Hot dog £1.20
How much change did we have from £10?
French fries p
Pizza p per slice
Next Slide

11. Drinks Menu
Three of us had drinks and we were given £0.30 change from £2. Which three drinks did we have?
B Tea p
A Coffee p
D Milkshake 90p
C Hot Chocolate p
F Milk 40p
E Fizzy Pop 50p
Next Slide

12. Dessert Menu Jelly 90p Ice Cream £1.80 Gingerbread People 60p
We ate every one of these puddings. How much change did we get from £20?
Gingerbread People p
Doughnuts
25p each
Cherry Pie £1.50
Fresh fruit £1.00
Next Slide

13. LO: To subtract using decimals
I need more practice to help me understand this and I made lots of mistakes.
Last Slide B
I am beginning to understand this and I got many of them correct. C
I really understand this and I got most of them correct.