PRACTICE UNIT TEST - Integers Multiple Choice
PRACTICE UNIT TEST - Integers
Multiple Choice
Identify the choice that best completes the statement or answers the question. 1. Let one white tile represent +1 and one black tile represent 1.
Write the integer modelled by this set of tiles.
a. +7
b. ?1
c. +3
d. +1
2. Let one white tile represent +1 and one black tile represent -1.
You have 10 black tiles. What tiles do you need to model 0?
a. 9 black
b. 10 white
c. 9 white
d. 10 black
3. Let one white tile represent +1 and one black tile represent 1. What sum does this set of tiles model? Write the addition equation.
a. (+4) + (+3) = +3 b. (-4) + (+3) = ?1
c. (+3) + (+4) = +7 d. (-3) + (+4) = +1
4. Let one white tile represent +1 and one black tile represent -1.
What sum is modelled by 6 white tiles and 2 black tiles?
a. +7
b. +8
c. ?4
d. +4
5. Add. (-8) + (+12) a. -20
b. +20
c. +4
d. 4
6. The temperature is 15?C and drops 8?C.
Write an addition equation to calculate the final temperature. What is the final temperature?
a. (+15) + (+8) = +9; 9?C
c. (+8) + (+15) = +23; 23?C
b. (+8) + (-15) = ?7; ?7?C
d. (+15) + (-8) = +7; 7?C
7. Let one black tile represent -1. Write the subtraction equation modelled by this diagram.
a. (-14) - ( 6) = -8 b. (+14) - (+6) = +8
c. (-14) - (?6) = +8 d. (-14) - (+6) = -8
8. Bryan gets on an elevator at the 35th floor. The elevator goes down 17 floors then up 9 floors.
At what floor does it finally stop?
a. 9
b. 27
c. 61
d. 43
9. Rewrite using addition.
(+7) - (-6)
a. (+6) + (-7)
b. (+7) + (+6)
c. (+6) + (?1)
d. (+7) + (-6)
10. Subtract.
a. ?31
b. +25
c. ?25
d. +31
Short Answer
11. Let one white tile represent +1 and one black tile represent -1. a) How many zero pairs are in this set of tiles? b) Write the integer modelled by this set of tiles.
12. Name all pairs of integers that have a sum of +2.
+3
+9
?6
?7
?1
+8
+11
?9
13. Write the addition equation modelled by the number line.
?3 ?2 ?1 0 1 2 3 4 5 6 7 8 9 10 11
14. Write the opposite of each integer. a) +9
b) ?6
c) ?256
15. Name all pairs of integers that have a difference of +2.
+3
?3
?6
?5
+5
?4
?10
?12
16. Write the subtraction equation modelled by the number line.
?13 ?12 ?11 ?10 ?9 ?8 ?7 ?6 ?5 ?4 ?3 ?2 ?1
0
1
2
3
17. Rewrite using addition to find each difference. a) (?4) ? (+5)
b) (?5) ? (?6)
Problem
18. Let one white tile represent +1 and one black tile represent ?1. Each box contains the written number of black and white tiles. What is the integer represented by the tiles in the 3 boxes combined?
3 black 2 white
6 black 7 white
9 black 3 white
19. Add. (+6) + (?2) + (+8)
20. Find all sets of 3 integers that have a sum of -2.
?3 ?6 ?4
+1 +9 ?3
?7 +4 +3
21. The table shows the scores for teams of students playing a series of board games.
Game 1
Game 2
Game 3
Team 1
?10
5
4
Team 2
?3
2
8
a) Determine the total score for each team.
b) Which team had the higher score?
22. Alicia owns a coffee shop. On Wednesday she made a loss of $11 and on Thursday a loss of $15. On Friday she made a profit of $13 and on Saturday a profit of $14. Did she make a profit or loss on the four days? Write an addition equation.
23. Which expression has the greater value? Explain your reasoning. a) (+7) ? (?2)
b) (?7) ? (+2)
24. Write the next 2 terms in each pattern. a) ?6, ?12, ?18, ?24,... b) ?13, ?17, ?21, ?25,... c) ?1, ?4, ?7, ?10,...
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