Multiples; Prime Factorisation; Squares & Roots (DCoT)

A prime number...

• has one factor.
• has more than 2 factors.
• has 100 factors.
• has exactly 2 factors: 1 and the itself.

Tags

CCSS.4.OA.B.4

All of these are prime except

• 3
• 9
• 2
• 13

Tags

CCSS.4.OA.B.4

2 x 2 x 2 is the prime factorisation of...

• 6

• 12

• 22

• 8

Tags

CCSS.6.EE.A.1

Write 68 as a product of its prime factors.

• 2x34
• 4x17
• 2x2x17
• 2x3x17

Which number is not a multiple of 10?

• 20

• 35

• 40

• 50

Tags

CCSS.4.OA.B.4

Joe has listed the first 4 multiples of 7 as: 
7   14    22     28
Which one is incorrect?

• 7
• 14
• 22
• 28

Tags

CCSS.4.OA.B.4

List all the factors of 6

• 1 and 6
• 1, 2 and 6
• 1, 2, 3 and 6

Which of the following shows the multiples of 12?

• 0, 12, 22, 53, 60

• 324

• 0, 4, 8, 12, 16, 24

• 0, 12, 24, 36, 48, 60

Tags

CCSS.6.NS.B.4

To find the square root of a number, you must divide it by 2.

• True
• False

Tags

CCSS.8.EE.A.2

Evaluate
√36

• 6
• -9
• 18
• -18

Tags

CCSS.8.EE.A.2