Practice
Name
1-5
Evaluating Numerical
Expressions
1. 62 2 (3.1 3 5 1 2.3)
18.2
27.3
4. 3.22 2 [(12.6 2 22) 3 0.6]
5.08
5
17.8
35.7
37
76
42.9
195
9. 72 2 [(62 – 22.4) 1 (8 4 0.5)] 1 3.8
23.2
11. 41 2 32 1 (8 3 2.3) 2 15 1 (2.1 3 4)
12. 13 1 26 2 [(2.8 3 5) 4 7]
10. 9 1 [(4.2 2 3.3) 1 (6.4 4 0.8)] 3 3
7. 33 1 4.2 3 8 4 0.2
8. 8.8 1 [(0.4 3 7) 1 (3.1 3 2)]
5. [(0.3 3 8) + (1.5 3 3)] 1 62
6. 40 4 [9.6 2 (8 3 0.2)]
3. 92 2 [(4.2 3 3.4) 2 9.28]
2. [(8 2 3.7) 3 6] 1 1.5
43.8
13. 16 1 23 2 [(5 1 2) 3 1.9] 2 13 1 6.8
19.5
14. Jessica bought a new computer for $800. She put $120 down
and got a student discount of $50. Her mother gave her ​ _12 ​ of the
balance for her birthday. Which of these expressions could be
used to find the amount Jessica still owes on the computer?
A 800 2 120 1 50 4 2
C 800 2 (120 2 50) 4 2
B [800 2 (120 2 50) 4 2]
D [800 2 (120 1 50)] 4 2
15. Number Sense A printing error in a math book removed the
brackets and parentheses from the original expression of (7 3 3.4) 2 [(2.8 3 5) 2 (4.3 3 2)] 1 42. Give the order of
operations a student solving this problem would have used to
evaluate the expression with the printing error, and find the value of
the incorrect expression and the correct expression.
Exponent, multiplication, multiplication, multiplication,
subtraction, subtraction, addition; incorrect: 17.2;
correct: 34.4
P 1•5
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