Inverse Operation
X - 3 = 9
x -3 +3 = 9+3
x = 9+3
x+5=12
x = 7
3x = 9
x = 3
12x = 132
x = 11
Who created the Harry Potter book series?
J.K. Rowling
x + 9 = 21
subtraction.
x + 9 - 9 = 21 - 9
x−4=10
x = 14
x ÷ 4 = 5
x = 20
x ÷ 7 = 8
x = 56
How many bones are there in the human body?
206
5x = 25
Division
5x ÷ 5 = 25 ÷ 5
x = 25
x+18=45
x = 27
9x=36
x = 4
7x = 84
x = 12
In which country would you find the Great Barrier Reef?
Australia
x ÷ 7 = 11
x ÷ 7 (7) = 11 (7)
17 - x = 5
x = 12
x ÷ 7 = 9
x = 63
12x = 60
x = 5
What is the capital city of Canada?
Ottawa
A pizza shop sells each slice for $3. If Mr.McDonald bought x slices for $18, how many slices did he buy?
Division
After giving away 6 apples, there are 14 apples left. How many apples were originally in the basket?
x = 20
Hannah paid $36 for some craft supplies. If each item costs $6, how many items did she buy?
x = 6
After reading 27 pages, Rick still has 73 pages left to read. How many pages does the book have in total?
x = 100
What is Mr.McDonald's dog's name?
Atlas