Multiplication
Division
Multiples or Factors
Mental Math
Divisibility Rules
100

5800 x 10 =

58,000

100

2,600/10 =

260

100

The first six multiples of 9 are: 

9, 18, 27, 36, 45, 54

100

144/12 = 

12

100

A number is divisible by 10 if...

It ends in zero (in its ones place)

200

98 x 1,000 = 

98,000

200

10,000/100 = 

100

200

The Least Common Multiple of 6 and 12 is:

24
200

24 x 3 = 

72

200

A number is divisible by 2 if...

The digit in the ones place is even

300

608 x 100 = 

60,800

300

210/3 = 

320

300

The 8th multiple of 7 is: 

56

300

10 x 10,000 = 

100,000

300

A number is divisible by 5 if...

The digit in the ones place is 0 or 5 (ends in 0 or 5)

400

12 x 50 = 

600
400

40,400/100 = 

404

400

The Greatest Common Factor of 48 and 32 is: 

8

400

25 x 6 = 

150

400

A number is divisible by 6 if...

It is divisible by both 2 and 3

500

70 x 80 = 

5,600

500

144,000/12 = 

12,000

500

The twelfth multiple of 12 is: 

144

500

602 x 3 = 

1,806

500

A number is divisible by 3 or 9 if...

The sum of its digits is a number divisible by 3 or 9

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