Unit 1 Review. Square Numbers A square number is a number that has the same numbers for its...
-
Upload
alan-jennings -
Category
Documents
-
view
225 -
download
3
Transcript of Unit 1 Review. Square Numbers A square number is a number that has the same numbers for its...
Composite Numbers• A composite number has more than 2 factors and
more than 1 array.• Arrays for the number 12
Factors
• A factor is the number you skip count by. It is also all of the numbers that can divide evenly into a number.
Factors of 20:1, 2, 4, 5, 10, 20
Multiples• A multiple is a number that you land on when
you skip count by a number. It is the number you count by or a larger number.
Multiples of 4:4, 8, 12, 16, 20, 24, 28
Multiples
Multiples of 3:(3, 6, 9, 12, 15, 18, 21, 24)
Multiples of 8:(8, 16, 24, 32, 40, 48, 56)
Multiples of 12:(12, 24, 36, 48, 60, 72, 84)
Multiplication
• Draw an array to help solve this problem.
Dan has 8 baskets. He puts 9 books in each basket. How many books does he have in all?
Breaking Down Numbers
• Which one of these answers would help you break down 8 x 11?
A. 8 x 10 = 80 and 8 x 2 = 16B. 8 x 5 = 40 and 8 x 5 = 40C. 8 x 10 = 80 and 8 x 1 = 8D. 8 x 12 = 96 and 8 x 2 = 16