Factors and Multiples

4th Grade Multiplication/factors

4th Grade Rounding

4th Grade Mental Math

4th Grade Math Mystery

100

Give a factor pair for the number 17.

17 is PRIME because it only has 1 factor pair

(1, 17).

100

Which is NOT a factor of 24?

A. 6

B. 2

C. 7

D. 3

C. 7

100

Round 2678 to the nearest thousands place.

2700

100

700 x 10=

7000

100

List 3 multiples of the number 7.

14, 21, 28, 35, 42, 49

200

List all the factor pairs of 24.

(1, 24) (2,12) (3, 8) (4, 6)

200

564 X 2

1,128

200

Round 2,424 to the nearest thousand

2,000

200

FREE MONEY

WOO HOO!

200

What is a factor?

The number that is being multiplied to find a product.

300

FREE MONEY

WOO HOO!

300

Boo in Boonville had 352 trick-or-treaters in 2021. They will have 3 times as many trick-or-treaters this year. How many trick-or-treaters will there be this year?

1,056

300

Round 7,768 to the nearest thousand

8000

300

250 x 30 =

7500

300

49,788 + 6,597

49,788 + 6,597 = 56,385

400

What are all the factor pairs of 63?

(1, 63) (3, 21) (7, 9)

400

1,278 X 9

11,502

400

Round 2,449 to the nearest thousand.

2,000

400

700 x 30

21,000

400

Input Output *List the rule and missing #s*

3 9

4 12

5 ?

6 ?

Rule:

Rule: x3

?-15

?-18

500

Carlos says 43 is a composite number because the factor pairs are (1, 43) (4, 11) and (6, 7). Do you agree or disagree, why?

DISAGREE: 43 is a PRIME number because it's only factor pair are (1, 43).

500

470 x 6

2,820

500

Round 402,756 to the nearest hundred thousand.

400,000

500

1,000 X 10

10,000

500

1,234,039 + 293,683

1,234,039 + 293,683 = 1,527,722

600

Eddie says these are all the factor pair of 56. Is he correct? Explain your reasoning.

(1, 56) (2, 28) (3, 17) (4, 14) (7, 8)

He is not correct because (3, 17) is not a factor pair of 56.

600

Hartford has 38 classrooms that each have 12 students in them. How many students are there in all?

There are 456 students in all.

600

Round 224,372 to the nearest hundreds

224,400

600

If you have a 30 minute lunch period and 5 days of school. How many minutes do you have lunch in an entire week?

150 minutes

600

1,234,039 - 293,683

1,234,039 - 293,683 = 940,356