Addition &
Subtraction
Subtraction
Multiplication
& Division
& Division
GEMS
Substitution
What is the equation?
100
x - 20,000 = 60,000
What is 80,000
100
9x = 27
What is 3
100
6-15÷5+2
5
100
a + b
when a = 10 and b = 10
20
100
Bill purchases some concert tickets. He gives seven of those tickets to his friends and has eight tickets left. How many tickets did Bill buy?
x - 7 = 8
x =15
200
a + 13 = 27
14
200
x/4 = 14
56
200
(12-2)+15÷3
15
200
3y - 6
when y = 6
12
200
Jake and his friends are playing video games. An hour later, 6 friends go offline. Five of them continue playing. How many of them were gaming online in the beginning?
x - 6 = 5
x = 11
300
k - 831=1215
What is 2046
300
5e = 400
What is 80
300
(8+3-6)÷5
1
300
4x - 3z
when x = 7 and z = 3
19
300
A lecture was attended by 95 people in the college theater. Eleven of them were students and the rest were professors. How many professors were there?
x + 11 = 95
x = 84
400
x + 36 = 100
64
400
28 = a/13
354
400
(32-4)÷4+6
13
400
100 
when x = 2
52
400
Susan, Lillian, Josh, and Tori go on an egg hunt. At the end, they have a total of 96 eggs to split equally. How many eggs did they each get?
4x = 96
x = 24
500
a - 63 = 392
What is 455
500
21y = 756
What is 36
500
8 x (5+2) - 7 x 3
35
500
x + t
when x = 5 and t = 14
12
500
If Lynn earns an annual salary of $72,000, find her monthly income.
12x = 72,000
x = 6,000