Grade 4 - Progress in Mathematics

Use the order of operations to simplify.

9. (6
   2) (9.3 7.5) 10. (45 5) (10.75 2.25)


10. 
    2
    5 
    

4

5 

2

5  12. 
 1

7

0  1

4

0  1

6

0 

13. 
    1
    2 
    

1

2 

1

4  14. 

3

4 


1

2 

1

4 

15. 
    
    1
    4 

1

4 


1

8 

1

8  16. 


2

6 

3

6 


1

3 

1

3 

17. 
    ^78 ^14 
    ^28 ^18  18.
    ^56 ^16 
    
    ^12 ^12 

Equalities

Equals added to or multiplied by equals are equal.

You can use the

order of operations

to check when

equations are true.

n(5 4)  2 (3 
3)

n  9  2  9

n  2

Addition:

equal

equal

3 
(1 7)  3 
(2 
a)

3 
 8  3 
 2 a

8  2 a

4  a

Multiplication:

equal

equal

Find the value of each variable.

19. 1 (3 2)  1 (1 a) 20. 4 (2
    3) u(1
    6)


20. (b
    7)  8 (9 5)  8 22. 5
    (6 n)  5
    (3 4)


21. (4 8)
    10 (d
    2)
    10 24. 7
    (7
    7)  7
    (7 f)

8  2 a

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