notes

Page 1

metric system: 3 main base units the meter for length, liter for volume, and gram for mass

Kilo= 1000

Hecta:=100

Deca= 10

base unit=1

Deci= 0.1

Centi= 01

This system is now the International System of Units (SI)

basic units are meter, liter, and gram

bigger unit to a smaller unit you multiply

smaller unit to bigger unit you divide

1000m = 1km

1000km= 1,000,000m

1000cm= 10m

1000m= 100,000cm

1000mm= 1m

EXCERCISE

1000g= 1kg

1000kg=1,000,000g

1000centigrams=10g

100g= 10,000centigrams

100mg= 0.1g

Page 2

SCIENTIFIC NOTATION

-You move the decimal point to the left until there is a non zero number and then you express it with a exponent by how many times you moved it .

813,000,000,000,000= 8.13 x 10 to the 14

- By moving to the right on the decimal point until you leave a digit that´s not a 0 and counting how many times you moved it and putting it as a exponent negative number.

0. 000 000 0214= 214 x 10 to the -7

7.921 x 10 to the 8 = 792,100,000

8.2 x 10 to the -5 = 0.000082

4.13x 10 the the 13= 4,130,000,000

5.2216x 10 to the -9= 0.0000000052216

Page 3

Exercise

1. 0.004 = 4. x 10 to the -3

2. 0.000000000000000123 = 1.23 x 10 to the -16

3. 452 000 000 000 000 = 4.52 x 10 to the 14

4. 698.25400000000000000 = 6.9825400000000000000 x 10 to the 2

5. 3.28 x 10 to the 8 = 328 000 000.00

6. 8.45 x 10 to the -3 = 0.00845

7. 8.45 x10 to the 5 = 845 000

8. 1.2 x 10 to the -8 = 0.000000012

9. 9110 = 9.11 x 10 to the 3

10. - 4.66 x 10 to the 4 = 46600

11. 9.01 x 10 to the 3 = 9010

12. 0.598 = -5.98 x 10 to the -1

13. 1.73 x 10to the 3 = 1730

14. -137000 = - 1.37 x 10 to the 5