Maths 1 Mark Question

65 by -13
= 65 ÷ (-13) = -5

(-35) × -1 = 35

-76 by 19
= -76 ÷ 19 = -4

(0) ÷ 31 = 0

0 by -31
= 0 ÷ (-31) = 0

(-16) + 9 = -7

2. -3

Solution:

(-9) - (-6)

= (-9) + 6

= -3

(-60) - (-59) = -1

1005 + (-277) = 728

(-1000) + 438 = -562

(-247) ÷ (-19) = 13

-8 by 1
= -8 ÷ 1 = -8

-1080

(-5) × (-8) × (-3) = (-5) × (24) = -120

(-16) × (-12) = 192

Consider the integers -4 and -5. Then, we have: (-4) + (-5) = -9, which is smaller than -4 and -5.

18 × (-6) = -(18 × 6) = -108

53 (Commutative property)

(-96) ÷ (-4) = 24
⇒ -4 × 24 = -96
(-96) ÷ (-4) = 24

(-8) [Commutative law]

False
Solution:
As (-1) ÷ (-1) = 1

False.
Solution:
Example: -9 + 2 = -7

0 - 318 = -318

(-21) × (0) = 0 [Property of zero]

-150 by 25
= -150 ÷ 25 = -6

(-47) × 68 – (-47) × 38
= (-47) × (68 – 38) [Asssociative property]
= (-47) × 30
= -1410

-1 + (-1) = -1
-1 ÷ (1) = -1

Consider the integers 2 and 6. Then, we have: 2 + 6 = 8, which is greater than both 2 and 6.

False.
Solution:
Since the number of negative signs is even, the product will be a positive integer.

83 (Additive inverse)

Consider the integers 8 and -8. Then, we have: 8 + (-8) = 0

True.

-132 by 12
= -132 ÷ 12 = -11

Additive inverse of 256 = -(256) = -256

True

25 × (-11) = (25 × 11) = -275

7 × (-8) × 3 = 21 × (-8) = -168

True.
Solution:
Aas zero divided by non zero integer is zero.

(-36) × (-50) = 1800

True

2. 8

Solution:

Suppose that a is subtracted from (-7). Then, we have

-7 - a = -15

a = -7 + 15 = 8

8 must be subtracted from -7 to obtain -15.

True.

(-238) + 500 = 262

False
Solution:
Every non-zero integer a has a multiplicative inverse 1/a, which is not an integer.

True
Solution:
All negative integers are less than zero.

(-5) [Associative law]

-36 ÷ (9) = -4
⇒ -36 ÷ (-4) = 9
-36 ÷ (9) = -4

-41 (Associative property)

Additive inverse of -83 = -(-83) = 83