Choose correct option in questions 1 to 5.
1. At Srinagar temperature was -5°C on Monday. On Wednesday, it rose by 4°C.
What was the temperature on this day?
a. -1°C
b. -9°C
c. 1°C
d. 9°C
2. (-3) × 5 = _____
a. 15
b. -15
c. 2
d. -2
3. (-2) × (-5) × (-3) = _______
a. 30
b. 10
c. -30
d. -10
4. (-8) × [(-2) + (-1)] = ______
a. 11
b. -24
c. -11
d. 24
5. 72 ÷ (-8) = ______
a. -9
b. 9
c. 80
d. -80
Fill in the blanks:
6. On a number line when we subtract a _______ integer, we move to the left.
7. The _________ of any integer a is -a.
8. For any integers a, b and c, we can say a + (b + c) = __________.
9. For any two integers a and b, a × b = __________.
10. Find:
1. 125 ÷ (-25)
2. (-325) ÷ (-13)
11. On a number line when we add a _______ integer, we move to
the left.
12. The additive inverse of any integer ________ is a.
13. For any two integers a and b, we can say a + b = _____.
14. For all integers a and b, a × b is an __________.
15. Find:
1. (-54) ÷ 9
2. (-261) ÷ (-3)
16. -5 ×(-6) = ?
17. Find a number that is 5 more than -1.
18. Find a number that is 4 less than 0.
19. -3 + ________ = -10
20. -30 + 20 = ___
21. 2 + ________ = -5
22. Find the difference between -21o C and -9
o C.
23. Find the difference between -2
o C and 1o C.
24. Find the difference between -16o C and 6o C.
25. Find: 80 ÷÷ (-5)
26. [(– 10) ×× (+ 9)] + ( - 10) is equal to
27. -16 ÷÷ [8 ÷÷ (-2)] is equal to
28. Write a pair of integers whose sum is zero (0) but difference is 10.
29. Which of the following shows the maximum rise in temperature?
30. (-10) ×× (-5) + (-7) is equal to
1) -5
o
to 5o
2) 23o
to 32o
3) -18o
to -11o
4) -10o
to + 1o
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