Show:
Miscellaneous
Multiplication & Addition
Multiplication & Subtraction
Division & Addition
Division & Subtraction
100

The opposite of subtraction

What is addition?

100
2k + 5 = 17
What is 6 ?
100
3a - 5 = 4
What is 3 ?
100
m/5 + 4 = 12
What is 40 ?
100
z/6 - 8 = 2
What is 60?
200

The opposite of addition

What is subtraction?

200
2a + 11 = 35
What is 12 ?
200
5m - 7 = 23
What is 6 ?
200
y/8 + 11 = 13
What is 16 ?
200
y/9 - 15 = 5
What is 180 ?
300
The four basic operations
What are addition, subtraction, multiplication, and division?
300
2r + 39 = 65
What is 13 ?
300
6k - 5 = 43
What is 8 ?
300
k/8 + 21 = 97
What is 608 ?
300
z/6 - 14 = 3
What is 102 ?
400

The opposite of division

What is multiplication?

400
12s + 27 = 171
What is 12 ?
400
4j - 71 = 29
What is 25 ?
400
g/11 + 37 = 128
What is 1188 ?
400
y/9 - 18 = 52
What is 630 ?
500

A letter used to represent an unknown number.

What is a variable?

500
19b + 314 = 1663
What is 71 ?
500
21q - 39 = 234
What is 13 ?
500
w/317 + 596 = 1,639
What is 330,631?
500
d/10 - 83 = 64
What is 1470 ?