Topic: Arithmetic Properties

Which numbers are composite?

• 31
• 39
• 41
• 49
• 53
• 57

Which numbers are divisible by 11?

• 121
• 143
• 154
• 165
• 176
• 189

Which integers leave remainder 2 when divided by 5?

• 17
• 22
• 27
• 32
• 35
• 42

Which fractions are already in lowest terms?

• 7/12
• 15/21
• 22/35
• 18/30
• 25/36

Which pairs are co-prime?

• 14 and 25
• 18 and 35
• 21 and 49
• 32 and 81
• 45 and 75

Which numbers are perfect cubes?

• 64
• 81
• 125
• 216
• 343
• 400

Which numbers are perfect squares?

• 121
• 144
• 169
• 180
• 196
• 225

Which numbers are divisible by both 6 and 8?

• 48
• 72
• 96
• 108
• 120