Test in Ten: Primes, HCF and LCM

Find the prime factorization of 420

• 2² • 3 • 5 • 7

• 7⁷

• 2² • 3 • 11

• 2³ • 3 • 7

Tags

CCSS.6.EE.A.1

What number has the prime factorization of 2³ • 11?

• 55

• 66

• 88

• 99

Tags

CCSS.6.EE.A.1

Find the HCF of 30 and 36

• 2
• 3
• 4
• 6

Tags

CCSS.6.NS.B.4

What is the HFC of 1342 and 3421?

• 11
• 23
• 56
• 57

17 is a PRIME NUMBER because it has just ___ factors: ___ and ___.

• 2, 5, 7

• two, itself, 1

• 2, 15, 2

• 2, 8.5, 2

Tags

CCSS.4.OA.B.4

What is a factor?

• a number or quantity that when multiplied with another produces a given number or expression.

• a number that can be divided by another number without a remainder.

• A Number

• A number experssiona to solve a multiplication problem

  SHOW ANSWER

What is the least common multiple (LCM) of 3 and 20?

• 60
• 40
• 20
• 3

Tags

CCSS.6.NS.B.4

What is the least common multiple (LCM) of 15 and 2?

• 30
• 2
• 45
• 152

Tags

CCSS.6.NS.B.4

Two neon signs are turned on at the same time. Both signs blink as they are turned on. One sign blinks every 9 seconds. The other sign blinks every 15 seconds. In how many seconds will they blink together again?

• 48 seconds
• 45 seconds
• 16 seconds
• 8 seconds

Tags

CCSS.6.NS.B.4

The school cafeteria serves tacos every sixth day and cheeseburgers every eighth day. If tacos and cheeseburgers are both on today’s menu, how many days will it be before they are both on the menu again?

• 14 days

• 24 days

• 34 days

• 44 days

Tags

CCSS.6.NS.B.4