Maths 1 Mark Question

7 + x = 0
⇒ 7 + x - 7 = 0 - 7
x = -7

(-1) + (-304) + 304 + 304 + (-304) + 1
= -1 + 1 - 304 + 304 - 304 + 304
= 0

Predecessor of -125 is = -125 - 1
= -126

Absolute value of (a - 7) is (a - 7) if a is greater than 7, that is, a - 7 > 0.

28 - (-10) < (-16) - (-76)
30 < 60

In order to subtract -12 from 8, 8 – (–12) = 8 + 12 = 20.

The largest negative integer is -1.Solution:
The numbers .... -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, ..... form the set of integers.
Thus, the largest negative integer is − 1.

Successor of 0 is = 0 + 1
= 1

True.Solution:
For example: -(-2) = 2

Additive inverse of 52 is -52.

We want an integer five less than 3. So, on the number line, we will start from 3 and move 5 units to the left to obtain -2, as shown on the number line.

-25

8, 7, 6, 0, 2, -5, -9, -15

True.Solution:
a > b

-|-5| is -5 and its absolute value is 5.

Integers between -7 and 3 are -6, -5, -4, -3, -2, -1, 0, 1, 2.

(-20) - (-20) > 20 - (65)
0 > -45

3km above sea level = +3

Absolute value of 14 is 14.

Additive inverse of 1 is -1.

False.Solution:
It should be -13 < -8 + 2 = -6

Predecessor of 1 is = 1 - 1
= 0

0 > -7

Predecessor of 0 is = 0 - 1
= -1

x + (-8) = 0
⇒ x - 8 = 0
⇒ x - 8 + 8 = 0 + 8 [adding 8 on both sides]
x = 8

We know that on the number line -27 is to left of -15.
So -27 < -15
-27 is smaller.

Absolute value of (a + 4) is (a + 4) if a is greater than -4, that is, a > -4 ⇒ a + 4 > 0.

Here, -1 is multiplied 5 times and since, 5 is an odd integer, therefore
(-1)(-1)(-1)(-1)(-1) = -1

25° above zero is = +25°

We know that on the number line -18 is to left of 12.
So 12 > -18
12 is larger.

(-12) - (-12) > (-12) + (-12)
0 > -24

We know that on the number line 3 is to right of -4.
So 3 > -4.
3 is larger.

False.Solution:
0 is simply an integer that is neither positive nor negative.

The largest negative integer is 1.Solution:
The collection ..... -4, -3, -2, -1, 0, 1, 2, 3, 4, ..... forms the set of integers.
Thus, the smallest positive integer is 1.

Successor of -99 is = -99 + 1
= -98

-235 > -532

Decrease of population.

Integers between -2 and 2 are -1, 0, 1.

Going South

Absolute value of -248 is 248.

Integers whose absolute values less than 5 are:
-4, -3, -2, -1, 0, 1, 2, 3, 4.

x + 0 = 0
x = 0

Value of (a + 4) is -(a + 4) if a is less than -4, that is, a < -4 ⇒ a + 4 < 0.

Integers are as shown in the number line.

A profit of 800 = +800

(-6) + (-9) < (-6) - (-9)
-15 < 3

-8 < 15