INTEGERS QUIZ- MATH P.6

REVISION WORK ON INTEGERS

1. Evaluate

(a)           8 – ^– 3                      (b)           ^– 9 – 6

(c)           Decrease ⁺7 by ^– 7

2. Work out:

(a)           ^– 3 x 0                     (b)           0.8 x (^–4)

3. Use a number line to add:

(a)           ^–6 + 4                      (b)           4 – ⁺ 7

(c)           Find the additive inverse of ⁺6.

(d)           Add: ^–6 + 6            (e)           ⁺14 – 14

4. Work out:

(a)           ⁺8 – ^– 8                    (b)           ^–10 – ⁺ 15                (c)           ⁺9 ¸ ⁺3

(d)           ^–6 x ⁺2                    (e)           ^–12 ¸ ^–3

5. The temperature of ice fell from -3⁰C by 5⁰ Find the temperature of ice.

(b)           Umeme men are to plant an electric pole 650cm. If 80 cm goes below the ground level. What is the height of the pole seen?

6. Write the expression shown on the number line

8. (a) Solve for X  in ^–3x + 5 < 8

(b)           Find the sum of ^–2 and 12.

(c)           Temperature on top of a mountain is 30⁰ at noon. It drops by -10⁰C.  What is the new temperature?

(d)           Find r if (^–2) + r = 0

9. (a) If X = {even numbers between 10 and 20}.

Find the solution set of 10 < x < 20.

(b)           Jie walked 4 metres. He remembered he had left some money behind and made 7 steps back to pick the money. Show it on a number line.

(c)           I think of a number, multiply it by 3 and subtract 4 from it, the answer is greater than 14. Find the number.

10.    (a)         Simplify: 2 x  6                                                   (b)           ^–2 (^–y + 1)

3

(c)           Solve: 3 > 3x > 9                  (d)           -4p < ^–8

11. Add: (a)           ⁺20 + ^– 8                 (b)           ^–8 + – 20 (c)           ⁺8 + ⁺ 60
12. Arrange the following integers.

• {^–2, 4, 8, 3, ^–1, 0} in ascending order
• {⁺10, ^–15, 3, 9, 0, ^–1} in descending order
• Use >, < or = to compare.

(i)            ^–20 ———– ⁺8                      (ii)           ^–2 —————– ^–10

(iii)          ⁺4 ———— ^– 400                  (iv)          0 —————– ^–1

13.   (a)          n – ^– 3 = 3 find the value of n.

(b)           What is the sum of ^–3y and ⁺7y?

(c)           Work out y: If y = {prime numbers less than 10}

14. Study the date below:

(^–2, ⁺3, ⁺4, ^–2, ^–5, ⁺2)

(a)           Find their mode.                   (b)           Work out their range

(c)           What is the median?

15. A rat climbs a pole of 50 m high. It climbs 10m and slides 2m down. What distance from the ground level will it be after sliding 6 times?