Factors and Multiples
Is the number 17 prime or composite? Explain why your reasoning.
17 is PRIME because it only has 1 factor pair
(1, 17).
300 X 7
2,100
Round 2678 to the nearest thousands place.
2700
700 x 10=
7000
What is the answer called in a multiplication problem?
Product
List all the factor pairs of 24.
(1, 24) (2,12) (3, 8) (4, 6)
564 X 2
1,128
Round 2,424 to the nearest thousand
FREE MONEY
WOO HOO!
What is a factor?
FREE MONEY
WOO HOO!
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
Round 7,768 to the nearest thousand
8000
250 x 30 =
7500
49,788 + 6,597
49,788 + 6,597 = 56,385
What are all the factor pairs of 63?
(1, 63) (3, 21) (7, 9)
1,278 X 9
11,502
Round 2,449 to the nearest thousand.
2,000
700 x 30
21,000
11,000 - 1,658
11,000 - 1,658 = 9,342
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).
47 x 63
2,961
Round 402,756 to the nearest hundred thousand.
400,000
1,000 X 10
10,000
1,234,039 + 293,683
1,234,039 + 293,683 = 1,527,722
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.
Hartford has 38 classrooms that each have 27 students in them. How many students are there in all?
There are 1,026 students in all.
Round 224,372 to the nearest hundreds
224,400
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
1,234,039 - 293,683
1,234,039 - 293,683 = 940,356