18. Write 2 345 000 000 in sclentific notation.
a. 2345 x 106
b. 234.5 x 107
c. 23,45 x 108
d. 2.345 x 10°
19. Express 9.32 x 10-5 in decimal notation.
a. 0.0000932
b. 0.000932
c. 0.00932
d. 0.0932
20. Which of the following is the most appropriate unit of measure for a free? .
a. centimeter
b. meter
c. dekameter
d. hectometer
21. Convert 5 000m to km.
a. 0.5km b. 5km c, 50km d. 500km
22. Which of the following is needed to fill a 2 kg container?
a. 200 000mg b. 20 000cg c. 2000dg
d. 2 000 g
23. How many centimeters are equivalent to 3 feet?
a. 9 000cm b. 900cm c. 90cm d. 9cm
24. A container can be filled with kl of water. Which of the following can be used to fill the sald container?
A. 10 000 m3 B. 1 000 m3 C. 100 m3
D. 10 m3
25. Translate into symbols;"ten added to the difference of a number and three"
A. 10 +(x-3) B. 10 +(3-x) C. (x-3)+10
D. (3-x)+10


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