Adding & Subtracting Integers
Add the integers
6+(-4)
2
Multiply the integers
-3 x 2
-6
What is the HCF of 8 and 12?
4
What is the LCM of 3 and 5?
15
Which kills more people each year?
A) Coconuts falling from trees
B) Sharks
A) Coconuts falling from trees
Subtracting the integers
7 - 10
-3
Divide the integers
-28 ÷ 7
-4
What is the HCF of 12 and 18?
6
What is the LCM of 4 and 6?
12
True or False: Bananas are technically berries.
True
Add the integers
-5 + (-6)
-11
Divide the integers
-48 ÷ -6
8
What is the HCF of 42 and 56?
14
What is the LCM of 14 and 21?
42
What is the name of the Pokémon that is the franchise mascot?
Pikachu
Subtract the integers
-8 - 4
-12
Multiply the integers
-7 x -15
105
What is the HCF 18, 24, and 30?
6
What is the LCM of 6, 8 and 12?
24
Double Points!
Which has more bones in its neck?
A) Giraffe
B) Human
Trick question!
They have the same
Solve
-20 + 3 - -9
-8
-56 ÷ 7 x -2
16
A teacher has 48 pencils and 60 erasers.
She wants to make the greatest possible number of identical prize bags with no items left over.
How many bags can she make?
12 bags
Two lights flash at the same time.
One flashes every 12 seconds and the other flashes every 18 seconds.
After how many seconds will they flash together again?
36 seconds
Which is older as a species?
A) Trees
B) Sharks
B) Sharks
(They’ve existed for over 400 million years, before trees appeared!)