Topic Review Solutions — Integers

Answers

1. Order integers Fluency

   1. −7, −3, −1, 0, 2, 5
   2. −10, −4, −2, 4, 7
   3. −3 is larger
   4. −5 is smaller

2. Add and subtract integers Fluency

   1. 3
   2. −4
   3. −8
   4. 0
   5. −8
   6. −2
   7. −7
   8. 5

3. Double signs Fluency

   1. −2
   2. 3
   3. −8
   4. 11
   5. 9
   6. −10
   7. 14
   8. 0

4. Integer reasoning Understanding

   1. −3 + 5 and 4 − 6 cross zero
   2. True
   3. True
   4. Negative

5. Problem solving Problem Solving

   1. 5°C
   2. −15 m
   3. $65
   4. x = −5
   5. n = 8

6. Multiply and divide integers Fluency

   1. −28
   2. 30
   3. −27
   4. −7
   5. 6
   6. −5
   7. 64
   8. −27

7. Integer multiplication reasoning Understanding

   1. False — (−5)² = 25
   2. Negative (three negatives multiply to give a negative)
   3. −6
   4. 36

8. Integer multiplication in context Problem Solving

   1. −$1 000
   2. −24°C
   3. −21 floors

9. Order of operations with integers Understanding

   1. −6
   2. −1
   3. 16
   4. −1

10. Integer reasoning in context Problem Solving

    1. 57 m
    2. 15
    3. −6°C