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Integers — Chapter Test

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Q1
Which integer is greater, −2 or −9?
−2 is to the right of −9, so it is greater.
Q2
The opposite of −15 is ___ ?
The opposite of −15 is 15.
Q3
Which is the smallest: −3, −7, 2, 5?
−7 is furthest left, so it is the smallest.
Q4
Continue the pattern: 5, 3, 1, −1, ___ ?
The rule is −2 each time: −1 − 2 = −3.
Q5
What is −6 + 4?
6 − 4 = 2, keep the negative sign, so −2.
Q6
What is −5 − 7?
−5 − 7 = −12.
Q7
What is 8 + (−3)?
8 − 3 = 5.
Q8
What is (−3) × (−4)?
Like signs give a positive: 12.
Q9
What is (−18) ÷ 6?
Unlike signs give a negative: −3.
Q10
What is (−7) × 2?
Unlike signs give a negative: −14.
Q11
The temperature is −2°C and rises by 5°C. What is the new temperature?
−2 + 5 = 3°C.
Q12
A diver is at −15 m and descends 10 m more. What is the new depth?
−15 − 10 = −25 m.
Q13
A shopkeeper makes a ₹50 profit then an ₹80 loss. What is the net result?
+50 − 80 = −30, a loss of ₹30.
Q14
What is (−2) × (−3) × (−1)?
(−2) × (−3) = 6, then 6 × (−1) = −6.
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