Thursday, January 30, 2020

Math Chapter 5 Review

Math Chapter 5
Review




1-   Mental Math – example:  
Subtract mentally.
Subtract 2 from:
67, 57, 37, 27

ans:  65, 55, 35, 25

2. Estimate the difference.

 56                  60
- 21                -20
_______           _______

3. Double digit subtraction – with and without regrouping

4. Re write the horizontal subtraction vertically then subtract.

5. Subtract.  Add to check.

6. Add/Subtract in a chain : 54-20+5=

7. Regroup – example - 2 tens 8 ones = 1 ten and 18 ones

8. Word problems.  Some with two steps and some with creating a table. 

Example a:  There are 2 stickers on each sheet of stickers.  There are 4 sheets of stickers.  How many stickers are there.  (The cart will be there but they need to complete it.)  

Sheets of stickers
1
2
3
4
Stickers
2
4
6
8



Sample b:

Matt has 19 hats.  He gives 4 away.  His father buys him 10 new hats.  How many hats does he have now?

9. How to use a table to answer questions. Please refer to Math lesson pages 227-228 for samples of these questions.  I will send it home tomorrow.




Good Afternoon!

We had a great day!  It ended with the 8th grade vs Teachers annual volleyball game and it was a hard fought, three game battle that ended with......

an 8th grade win!

Fun was had by all.

Math test tomorrow- please review, especially word problems.  We reviewed a lot in class today.  I told them to bring home the math notebook where we did the review so they can prepare.