Math 24

Learn Math Part 24

100

Review: 0.01

hundredth

200

Review: 20 35 c

40.3

300

Example: 25 35

1. multiply by 2 25x2=50 and 35x2=70

2. add 50+70=120

6 20

6x2=12 20x2=40 12+40=52

400

Example: 25 35

1. multiply 25x35=875

6 20

6x20=120

500

Example: 6 8 15

1. multiply 6x8x15 6x8=48 48x15=720

6 20 2

6x20x2 6x20=120x2=240

perimeter

100

40 5

40x2=80 5x2=10 80+10=90

200

26 15

26x2=52 15x2=30 52+30=82

300

52 34

52x2=104 34x2=68 104+68=172

400

26 P=152

26x2=52 152-52=100 100/2=50

500

45 P=565

45x2=90 565-90=475/2=237.5

area

100

40 5

40x5=200

200

26 15

26x15=390

300

52 34

52x34=1768

400

26 50

26x50=1300

500

45 12

45x12=540

volume

100

40 5 26

40x5=200x26=5200

200

15 52 34

15x52=780x34=26520

300

26 50 45

26x50=1300x45=58500

400

12 30 8

12x30=360x8=2880

500

8 5 V=1600

8x5=40 1600/40=40

Decimal Review

100

3.2 round

3

200

forty-five hundredths

0.45

300

1.5x0.6

0.9

400

2.565656565 is this repeating?

yes

500

fifty-six point one tenth

56.1