GRADE 8 MATHEMATICS

If a and b are whole numbers, which one of the following statement is always true?

• a+b = b+a

• The difference of two whole numbers is always a whole number.
• The quotient of two whole numbers is always a whole number.
• The product of two whole numbers is always a whole number.

If x and y are integers, which of the following statements is always true?

• x+y = y+x

• The product of two integers is always an integer.

• The difference of two integers is always an integer.

• The quotient of two integers is always an integer.

Complete : (12/2) + (6*3) - 3

• 18
• 24
• 15
• 21

• 10
• 8
• 6
• 4

• 10

• 12

• 14

• 16

Simplify: (5 + 3) * (2 - 1)

• 6

• 8

• 10

• 12

0.16 * 0.4

• 0.1
• 0.24
• 0.06
• 0.064

• 72
• 64
• 18
• 27

The lowest common multiple of 9 and 6 is:

• 18
• 12
• 15
• 21

between parallel lines, co-interior angles are :

• Supplementary
• Complementary
• Vertical
• Corresponding