Factors, Prime and Composite Numbers

Which of these equations shows that 63 is 9 times as many as 7?

• 9 + 7 = 16

• 9 x 7 = 63

• 9 ÷ 63 = 7

• 9 x 63 = 7

Tags

CCSS.4.OA.A.1

Corn muffins cost $2 each. Blueberry muffins cost $3 each. Which of the following equations can be used to find m, the total cost in dollars of 8 corn muffins and 7 blueberry muffins?

• (2 + 3) x (8 + 7) = m

• (2 x 3) + (8 x 7) = m

• (2 + 8) x (3 + 7) = m

• (2 x 8) + (3 x 7) = m

Tags

CCSS.6.NS.B.4

Kiril’s clues about a number are:

1. It is an even number
2. It is a multiple of 5
3. It is less than 28

What number fits all of Kiril's clues?

Tags

CCSS.5.NBT.A.2

During art class last week, Carmen put crayons into cups for her art teacher.

She put exactly 9 crayons into each cup.

Altogether, Carmen put more than 35 crayons, but fewer than 40 crayons, into the cups.

What is the total number of crayons that Carmen put into the cups?

Tags

CCSS.4.NBT.B.6

Which number is prime?

• 57
• 19
• 9

Tags

CCSS.4.OA.B.4

Which number is composite?

• 2
• 4
• 13

Tags

CCSS.4.OA.B.4

Is 6 a factor of 72?

• yes
• no

Tags

CCSS.4.OA.B.4

How many factors does 24 have?

• 10

• 12

• 8

Tags

CCSS.4.OA.B.4

Which is not a multiple of 4?

• 220

• 466

• 396

Tags

CCSS.4.OA.B.4

How many times can you count by 6 to get to 72? 

• 12
• 14
• 72

Tags

CCSS.4.NBT.B.6