Chapter 4 Extra support questions

 

1. Complete the following

 

 

 

 

 

x

 

2x

    2

X

 

    3

X

3

 

 

 

 

(-3)

 

 

 

 

4

 

 

 

 

 

 

2. Simplify:


 

                            4

3.  Write 1.65 x 10   in expanded notation.

 

 

 

4. Write 91.65 in scientific notation.

 

 

 

 

5.  Simplify the following expression and leave your answer with positive exponents only.

 

 

 

 

 

 

 


6.  Divide

 

 

 

 

 

 

 

 

7.  Multiply 

 

 

 

 

 


8. Simplify

 

 

 

 

 


9. Add the following:

 

    4X+8x

 

 

10. Simplify

 

     10 x-12x+2x

11.  Simplify                                                                                                          

 

12.  Simplify                                                                                

 Questions 13-18 Simplify each of the following expressions and leave your answer with positive exponents only.

 

13.                                                                                                                           

 

14.                                                                                                                                 

 

15.

 

                                                                                                                       

16.           

 

                                                                                                                       

17.                                                                                                                                          

 

18.                                                                                                                        

 

19. Write 491000000 in scientific notation.                                                                  

 

20. Write  in expanded notation.                                                                 

 

21. Simplify.     Write your answer in scientific notation.                      

 

22. Add                                                                                                      

 

 

23. Subtract                                                             

 

24-27 Multiply each of the following

 

24.                                                                                                                        

 

25. (3x +4)(2x-5)        

 

                                                                                                           

26.                                                                                                      

 

27.               

                                                                                               

28. Divide  by .                                                                        

 

 

 

 

 

29. Divide                

                                                                                   

 

30. Divide

                                                                                                                       

 

31. Simplify

 

 

32. Subtract   5x-8   from   9x-10  

 

 

 

33. Multiply    (x+8) (x+8)

 

 

 

34. Multiply

 

 

 

35. Divide

 

 

 

 

Answers

 

1.

 

 

x

 

2x

    2

X

 

   3

X

3

6

9

27

(-3)

-6

9

-27

4

8

16

64

 

 

2.  0.16

 

 

3. 16500

 

                        1

4.    9.165 x 10

 

 

 

 

 


5.

 

 

 

 

 

 


6.

 

 


7.

 

 

 

 


8.

 

 

 

9.  12x

 

 

10.  zero

 

 

11.  

 

12.  

 

13.  

 

14.  

 

15.  

 

16.  

 

17.  

 

18.  

 

19.  

 

20.  0.00000324

 

21. 

 

22. 

 

23. 

 

24. 

 

25. 

 

26. 

 

27. 

 

28. 

 

29. 

 

30. 

 

31. 

 

32.          

 

33. 

 

34. 

 

35.  2x+3