Multiple Choice
Which set shows the factors for the number 14?
a. 1,14
b. 1,2,5,10
c. 1,2,3,4,5,6,7
a. 1,14
List the set of all factors of F10
1, 2, 5, 10
List the first 5 multiples of M7
0, 7, 14, 21, 28, 35
GCF (10, 16)
F10: 1, 2, 5, 10
F16: 1, 2, 4, 8, 16
GCF: 2
RJ pays $8.00 for materials to make pillows. He makes 4 pillows and sells 2 for $9.50 each and 1 for $5.35. What is his profit?
$9.50 x 2 = $19 + $5.35 = $24.35
$24.35- $8.00= $16.35
Which number is a multiple of 6?
a. 21
b. 36
c. 73
b. 36
List the set of all factors for F30
1, 2, 3, 5, 6, 10, 15, 30
List the first 5 multiples of M3
0, 3, 6, 9, 12, 15
GCF (12, 24)
F12: 1, 2, 3, 4, 6, 12
F24: 1, 2, 3, 4, 6, 8, 12, 24
GCF: 12
Nolan buys 3 sets of socks for $4.99 each, four t-shirts for $5.99 each, and a water bottle for $16.99. How much does he spend in all?
3 x $4.99= 14.97
4 x 5.99= 23.96
$14.97 + 23.96 + 16.99 = $55.92
Which are PRIME numbers?
37
2
16
53
37, 2, 53
List the set of all factors for F5
1, 5
List the first 5 multiples of M9
0, 9, 18, 27, 36, 45
GCF (15, 45)
F15: 1, 3, 5, 15
F45: 1, 3, 5, 9, 15, 45
GCF: 15
Connor buys a poster for $10.75. He also buys 3 chocolate bars for $2.00 each. How much does he spend?
3 x 2.00= 6
10.75 + 6 = $16.75
Which are COMPOSITE numbers?
9
49
91
27
9, 49, 27
Draw a factor tree for 20
*see drawing on board*
Find the least common multiple of the pair of numbers
LCM (3,9)
M3: 0, 3, 6, 9, 12
M9: 0, 9, 18, 27
LCM: 9
Is 160 divisible by
a. 2
b. 3
c. 5
d. both a and c
D. both a and c
Draw a factor tree for 48
*see drawing on board*
Find the least common multiple of the pair of numbers
LCM (6, 12)
M6: 0, 6, 12, 18
M12: 0, 12, 24
LCM: 12