Number Theory

A natural number that possesses exactly two different factors, itself and 1, is called a ________ number.

• Prime

• Composite

• Odd

• Even

A natural number that possesses more than two different factors is called a ________ number.

• Prime

• Composite

• Odd

• Even

The number "1" is

• Prime

• Composite

• Neither

Tags

CCSS.4.OA.B.4

Which of the following numbers is 237 divisible by?

• 9

• 7

• 3

• 2

Tags

CCSS.6.NS.B.2

The first six nonzero multiples of 7 are....

• $7,\ 14,\ 28,\ 35,\ 42,\ 49\ \$

• $7,\ 14,\ 21,\ 28,\ 35,\ 42\$

• $14,\ 21,28,\ 35,\ 42,\ 49$

• $1,\ 7,\ 14,\ 21,\ 28,\ 35\$

Tags

CCSS.3.OA.C.7

Which of the following numbers is prime?

• $39$

• $108$

• $98$

• 
  

  $79$
  

Tags

CCSS.4.OA.B.4

The prime factorization of 104 is

• $2+2+2+13$

• $2\times2\times2\times13$

• $2\times2\times1\times3$

• $2\times2\times2\times3\times1$

Tags

CCSS.4.OA.B.4

The first eight  nonzero multiples of 6 are

•  $6,\ 12,\ 18,\ 30,\ 36,\ 42,\ 48,\ 54\$  

•  $0,\ 6,\ 12,\ 18,\ 24,\ 30\ 36,\ 42\$  

•  $1,\ 6,\ 12,\ 18,\ 24,\ 30,\ 36,\ 42\$  

•  $6,\ 12,\ 18,\ 24,\ 30,36,\ 42,\ 48$  

Tags

CCSS.3.OA.A.1

CCSS.3.OA.B.5

CCSS.3.OA.C.7

CCSS.3.OA.D.9

Which of the following numbers are divisible by 3 and 4 ?

• 79

• 356

• 72

• 32

Tags

CCSS.6.NS.B.4

The numbers 0, 1, 2, 3, ... are called

• whole numbers
• integers
• rational numbers
• natural numbers