Chemistry Math Review                                                Name ______________________________

Answer the following questions

1)      2 + 4 x 3 =                                                  2)      4 + 2 x 3 =

3)      2 x 4 + 3 =                                                  4)      2 x 4 + 3 =

5)      40 + 20  =                                                   6)       20 + 40  =
10                                                                          10

7)      40 + 20  =                                                   8)        20 + 40  =
10                                                                           10

9)      (4 + 3) ÷ 6 =                                                         10)    4 + 3 ÷ 6 =

Solve the following equations for x

11) 2x = 8                                                            12) 2 = 8x

13) 14) 15) 16) 17) where y = 8 and z= 4                            18) where y = 8 and z= 4

Answer the following questions

19) (3.0 x 104) + (6.3 x 105)                                           20. (3.0 x 108) x (6.3 x 107) Use the graph above to answer the following questions.

21. How far had they traveled after 15 seconds?

22. How long did it take to travel 75 m?

23. After 30 seconds, what speed were they traveling?