1. Math Review #1
Math 8

2. Place Value 85 629 325 What is the value of 529 326
The value of this # is not 6. It is (six hundred thousand
What is the value of
Value is 9000 (nine thousand)

3. Standard, Expanded & Written Form
Written: three hundred fifty-nine thousand two hundred sixty-one
Write in expanded and written forms
Expanded:
Written: two hundred twenty-three thousand four hundred thirty-two

4. 4 2 9.6 2 5 Rounding Round 3.9264 to the nearest hundredth 3.9264 3.93
ones
hundreds
hundredths
Round to the nearest hundredth
3.9264
6 is bigger than 5 so round up
3.93
Don’t put any numbers after the hundredth position
tens
tenths
thousandths

5. Rounding 6.00 Round 5.65394 to the nearest hundredth 5.65394 5.65
3 is smaller than 5 so stays the same
5.65
Round to the nearest thousandth
5 is same as 5 so round up
18.429
Round to the nearest hundredth
5 is same as 5 so round up, 9 goes to zero so carry over the rounding
6.00
Keep “0” because we need to show we rounded to the nearest hundredth

6. Number Line
Arrows means it goes forever in both directions “infinite” 1 2 3 4 -1 -2 -3 -4 M A T H
Put the following #s on the number line
H: M: T: A:

7. Addition & Subtraction
6.85
+ 3.91
10.76
4.82
- 3.95
0.87
6.05
- 3.08
2.97
Add 4.92 & 3.55
Line up the number in columns
4.92
+ 3.55
8.47
Subtract 2.96 from 5.33
5.33
- 2.96
2.37
Try :
sum of 6.85 & 3.91
difference of 3.95 from 4.82
6.05 minus 3.08 4 1 2 1