Math 23

Learn Math Part 23

100

Review: Teddy Left work at 3:00 he has to go the the mail office. It closes at 5:00. It took him 1 hour and 55 minutes. Will he have time to go the post office?

yes 4:55

200

Example 1: 25 10 c

1. do 25²+10²=725

2. square root of 725 is 26.9

Example 2: 15 b 30

1. 15²+b²=30²

2. 15²=225 30²=900

3. subtract 900-225=675

4. square root of 675 is 25.9

30 10 c

31.6

300

Example: 512/8/8

1. just divide 512/8=64/8=8

64/2/8

64/2=32/8=4

400

Example: 10

1. that ten

1

ones

500

Review: |65|

distance from 0

65

PT Advanced

100

35 c 43

55.4

200

50 26 c

56.3

300

15 b 40

37.08

400

6 b 16

14.8

500

a 5 10

8.6

Very Hard Divide

100

84/2/7

84/2=42/7=6

200

512/2

256

300

925/5/5

925/5=185/5=37

400

126/5

25.2

500

125/5/4

125/5=25/4=6.25

Place Value

100

100

hundred

200

1000

thousand

300

1000000

million

400

0.1

tenth

500

0.001

thousandth

Absolute Value Review

100

|74|

74

200

|-32|

32

300

|0.5|

0.5

400

|-1/8|

1/8

500

|-754|

754