Estimation, Factors, and Multiples

Choose all of the factors of 20?

• 4

• 5

• 6

• 20

• 3

Tags

CCSS.4.OA.B.4

What number will always be a factor of a number?

• 2

• There are no numbers that will always be a factor

• 1

Tags

CCSS.4.OA.B.4

Identify all the factors of 10.

• 2

• 3

• 5

• 10

Tags

CCSS.4.OA.B.4

Identify the correct list for all the factors 16.

• 1, 2, 4, 6, 8, 16

• 1, 4, 8, 16

• 1, 2, 8, 16

• 1, 2, 4, 8, 16

Tags

CCSS.4.OA.B.4

Estimating is

• finding the exact answer.

• using an algorithm.

• finding something close to the correct answer.

Estimate to the nearest HUNDRED

341 + 814

• 1,155

• 1,000

• 1,100

• 1,300

• The correct answer is not here.

Estimate to the nearest TEN

418 + 175

• 500

• 600

• 593

• 580

• The correct answer is not here.

Use a factor tree to find the prime factorization of 50.

• 2 x 2 x 5 x 5

• 5 x 5 x 3 x 2

• 2 x 5 x 5

• 2 x 25

Click all of the PRIME numbers.

• 1

• 3

• 15

• 11

• 2

Tags

CCSS.4.OA.B.4

Click all of the COMPOSITE numbers.

• 2

• 14

• 33

• 1

• 50

Tags

CCSS.4.OA.B.4