Find the missing number!
3:4 = 9: ?
12
Find the value of the ratio:
2:6
1:3
Is 10 divisible by 2?
YES!
A number is divisible by 2 if the last digit is EVEN
Is 2 a prime or composite number?
PRIME! 1 x 2 = 2
What did the triangle say to the circle?
“You’re pointless.”
?: 8 = 6: 16
3
Find the value of the ratio:
4:16
1:4
Is the number 59 divisible by 5?
NO!
A number is divisible by 5 if the last digit is either 5 or 0
Is 20 a prime or composite number?
COMPOSITE!
1x20 = 20 2x10 = 20
4 x 5 = 20
Why did the student do multiplication problems on the floor?
The teacher told him not to use tables.
20: ? = 40: 100
50
20:80
1:4
Is the number 1,000,001 divisible by 10?
NO!
A number is divisible by 10 if the last digit is 0.
Is 15 a prime or composite number?
COMPOSITE!
1 x 15 =15
3 x 5 = 15
What do you call a hen who can count her own eggs?
A mathemachicken
100 : 500 = ? : 1500
3
12:60
1:5
YES!
A number is divisible by 4 if the last two digits are divisible by 4.
Is 23 a prime or composite number?
PRIME!
1 x 23 =23
What are ten things you can always count on?
Your fingers.
1: 10 = 600 : ?
6,000
100:1000
1:10
Is 648 divisible by 6?
YES! A number is divisible by 6 if the 2 RULE & 3 RULE BOTH work!
2 Rule-Is the last number 0,2,4,6,or 8?
3 Rule- Add up the numbers. If you can divide the number by 3, it works!
Is 100 a prime or composite number?
COMPOSITE!
1 x 100=100 2 x 50=100
4 x 25 = 100 5 x 20 = 100
10 x 10 = 100
Why was six afraid of seven?
Because seven, eight, nine!