Multiplicative Thinking Revision

-2 x 3 =

• 4

• -4

• 6

• -6

-4 x -5

• 10

• -10

• 20

• -20

How do you tell if a number is divisible by 3

• The number is even

• The sum of the digits is divisble by 3

• The number is odd

• The number ends in a 0 or 5

How do you know if a number is divisible by 4?

• The sum of the digits is divisible by 4

• The number is odd

• The number ends in a 4

• The last 2 digits are divisible by 4

What is the divisibility rule for 6

• Is even and is divisible by 3

• The last three digits are divisible by 6

• The last digit is even

• The last 2 digits are divisble by 6

• 4

• 8

• 2

• 4

• -4

• 8

• -8

• 4 + 4 + 4

• 4 x 4 x 4

• 4 x 4 + 4

• 4 + 4 x 4

• 3 and 4

• 4 and 5

• 5 and 6

• 6 and 7