Math 18

Learn Math Part 18

100

Review: 5.24+3.44

8.68

200

Example: 1.25-2.50

1. just like negatives -1.25 

5.56-6.25

-0.69

300

Example: 1.25x0.5

1. multiply it sample like whole number 0.625

0.5x0.2

0.1

400

Example: 1.25/0.5

1. divide 2.5

0.5/0.2

2.5

500

Example 1: 0.25x100

1. move the decimal point to the right of that many zeros 25

Example 2: 0.25/100

1. move the decimal point to the left add zero if necessary 0.0025

0.053

5.3

negative Decimal

100

1.5-2.5

-1

200

3.25-4.99

-1.74

300

4.67-7.99

-3.32

400

3.66-4.67

-1.01

500

25-54-75.05

-49.51

multiply decimal

100

0.1x0.2

0.02

200

0.67x0.5

0.335

300

1.5x0.6

0.9

400

2.56x0.3

0.768

500

5.54x2.97

16.4538

divide decimal

100

0.1/0.2

0.5

200

0.67/0.5

1.34

300

1.5/0.6

2.5

400

2.56/0.3

8.53_

500

5.54/2.97

1.86531986532

power of decimals

100

0.97x100

97

200

13.65/100

0.1365

300

5.65x1000

5650

400

137.5/10000

0.01375

500

576.5x1000000

576500000