12 xs table
multiples
factors
mental math
Mystery Box
100
12 x 4
48
100
True or false...
25 is a multiple of 5
TRUE...
5, 10, 15, 20, 25
100
Which of the following IS a list of factors?
A) 1, 3, 6, 9, 18
B) 1, 5, 10, 20, 25
C) 3, 6, 9, 12, 15
A) 1, 3, 6, 9, 18
These are all factors of 18.
100
15 x 3 =
45
100
Which number is the PRODUKT?
7 x 15 = 105
105 is the Produkt
200
12 x 6
72
200
Which of these IS a list of multiples?
A) 12, 16, 18, 22
B) 1, 3, 6, 9
C) 4, 8, 12, 16
C) 4, 8, 12, 16
200
Which number below is NOT a factor of 25?
A) 1
B) 5
C) 10
C) 10
You cannot multiply anything by 10 and get 25.
200
25 x 6 =
150
200
20 x 5 = A x 50
What value is A?
A = 2
300
12 x 7
84
300
What are these numbers all multiples of?
24, 32, 40, 48, 56, 64
These are all mutliples of 8.
300
Which of the following IS a factor of 31?
A) 16
B) 1
C) 3
B) 1
31 is a PRIME NUMBER, divisible only by 1 and itself.
300
22 x 4 =
88
300
Miss Klassen gave each Red Panda a cheeseburger. Each cheeseburger was 0,50€. How much did Miss Klassen spend on cheeseburgers?
She spent 10€ on cheeseburgers.
400
12 x 9
108
400
Which of these numbers is a multiple of 6?
A) 16
B) 72
C) 46
B) 72
6, 12, 18... 60, 66, 72
400
Which of these lists ALL of the factors of 72?
A) 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
B) 2, 3, 4, 6, 8, 9, 12, 18, 24, 36,
C) 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36,
A) 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
1 and the product are always the smallest and biggest factors.
400
150 x 4 =
600
400
What is a prime number (Primzahl) and give an example.
A prime number is a number that it only divisible by 1 and itself.
For example, 5 is a prime number.
500
12 x 12
144
500
Explain the difference between a multiple and a factor.
multiple = skip counting
5, 10, 15, 20, 25
factor = number that the product is divisible by.
factors of 12 = 1, 2, 3, 4, 6
500
Which of these IS a factor of 48?
A) 5
B) 16
C) 9
B) 16
16 x 3 = 48
500
205 x 6 =
1 230
500
7 + 7 + 7 + 7 = 28
7 x 3 = 21
3 x 8 - 7 = 17
7 x 8 + 3 - 8 = 51