Topic 7 Review part 1

Topic 7 Review

Factors and Divisibility Rules

Multiple Choice

Which of the following numbers is a factor of 6?

• 12

• 2

• 8

• 10

Multiple Choice

Which lists all the factors of 15?

• 1, 7, 8, 15

• 1, 15

• 1, 3, 5, 15

• 3, 5, 15

Multiple Choice

Which of the following is a factor of 8?

• 3

• 5

• 4

• 7

Multiple Choice

Which is not a factor of 21?

• 1

• 3

• 6

• 7

Divisibility Rule

2

A number is divisible by 2 if the number in the ones place is even or ends in 0. Even numbers are 2,4,6,8, 0

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Multiple Choice

Is 3 divisible by 2?

• Yes

• No

Multiple Choice

Is 56 divisible by 2?

• Yes

• No

Multiple Select

Which number is not divisible by 2

• 280

• 456

• 547

• 878

• 434

Multiple Select

Check the numbers that are divisible by 2

• 762

• 1,234

• 852

• 453

• 657

Divisibility Rule

3

A number is divisible by 3 if the sum of the digits is a multiple of 3

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Multiple Choice

Which of these numbers is divisible by 3?

• 346

• 581

• 248

• 663

Multiple Choice

Is 10 divisible by 3? Hint: 1+0=1

• YES

• N0

Multiple Choice

Is 20 divisible by 3? Hint: 2+0=2

• YES

• N0

Multiple Choice

Is 21 divisible by 3? Hint: 2+1=3

• YES

• N0

Divisibility Rule

4

The last 2 digits on the number are divisible by 4. If a number is odd, it cannot be divisible by 4.

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Multiple Choice

Is 221 divisible by 4?

• Yes

• No

Multiple Choice

What is the divisibility rule for 4?

• The sum of the digits must be a multiple of 4

• The last two digits must form a number that is a multiple of 4

• The number must be divisible by 2 and 3.

• The number must end in 0, 2, or 4

Multiple Choice

Is 36,928 divisible by 4?

• Yes, because the sum of the digits is a multiple of 4

• Yes, because it is an even number

• Yes because the last two digits, 28, is divisible by 4

• Yes, because it is divisible by 2 and 3

Divisibility Rule

5

The ones place is a 5 or 0.

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Multiple Choice

All of these numbers are divisible by 5 except...

• 1050

• 155

• 980

• 2938

Multiple Choice

All of these numbers are divisible by 5 except for...

• 75,395

• 222,222,235

• 984,940

• 8,943,892

Divisibility Rule

6

The number must be divisble by BOTH 2 and 3.

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Multiple Choice

True or False...

40,500 is divisible by 6

• True

• False

Multiple Choice

Is 3,522 divisible by 6?

• Yes

• No

Multiple Choice

Is 4,130 divisible by 6?

• yes

• no

Multiple Choice

Which of these is divisible by 6?

• 328

• 621

• 105

• 318

Divisibility Rule

10

The ones place ends in a 0.

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Multiple Choice

Is 100 divisible by 10

• yes

• no

Multiple Choice

Which of these is divisible by 10?

• 8105

• 375

• 460

• 52

Multiple Choice

All numbers divisible by 10 are also divisible by 5 .

• true

• false