Factors & Multiples
Directions: List the factors of 12. List the multiples through 12 of each factors
Table:
Factors of 12 Multiples up to 12 of each factor
Factors of 12 Multiples up to 12 of each factor
1 1,2,3,4,5,6,7,8,9,10,11,12
2 2,4,6,8,10,12
3 3,6,9,12
4 4,8,12
6 6,12
12 12
Is 12 prime or composite? Prove your answer.
Composite: More than just one and itself are factors of 12.
1 x 12 = 12
2 x 6 = 12
3 x 4 = 12
Find the product of 8 x 24.
24 x 8 = 192
20 x 8= 160
4 x 8 = 32
160 +32 = 192
If 9 x 6 = 54, what is an inverse division problem?
54/6=9
54/9=6
When you see a rectangle with unit square inside of it, is it showing you area or perimeter? How do you know?
Area.
The area is the unit squares inside a shape.
The perimeter is the distance outside a shape.
What are the factor pairs of 21?
1, 21
3, 7
Is 11 a prime number? Prove your answer.
Yes
only 1 and 11 are factors of 11.
2,4,6,8,10,12 (No 11)
3,6,9,12, (No 11)
4,8,12, (No 11)
5,10,15 (No 11)
6,12 (No 11)
7,14 (No 11)
8,16 (No 11)
9,18 (No 11)
10,20 (No 11)
Find the product of 9 x 36.
36 x 9 = 324
30 x 9 = 270
6 x 9 = 54
270 + 54 = 324
If 3 x 3 = 9, what is an inverse division problem?
9/3=3
Draw the shape and find the area of a 7 by 8 rectangle.
Area = 56
7x8=56
Is 27 a multiple of 3? Prove your answer.
Yes
3,6,9,12,15,18,21,24,27
3 x 9 = 27
Solve 42 / 7 = ________
What multiplication fact helped you with this division problem? _________
42/7 = 6
7x6=42
Draw the shape and find the perimeter of a 4 by 9 rectangle.
Perimeter= 26
4+9+4+9=P
4+4=8
9+9=18
8+18=26
Is 8 a factor of 18? Prove your answer.
No
8,16, 24 (No 18)
I can't separate 18 into 8 group equally.
Find the quotient of 85 / 5 =
85/5 = 17
(5 x 10=50) 85-50 = 35
(5 x 7 = 35) 35-35 = 0
10+7 = 17
Find the length of the missing side.
The area of the shape is 48 ft.
8 ft.
Area= 48ft.
48/8=6
Area = 6 x 8 = 48
Find the quotient of 92 / 4 =
92/4=23
(4x10=40) 92-40=52
(4x10=40) 52-40=12
(4x3=12) 12-12=0
10+10+3=23
Find the length of the missing side.
The perimeter of the shape is 24 ft.
?
3 ft.
Missing side = 9 ft.
P=24ft
3+3=6 (right + Left sides)
24 - 6 = 18 (sum of the top and bottom)
18/2=9 (the size of the top and/or bottom)
Check: 3+3+9+9 = 24ft.