Equations

Addition

100

Q+4=12

Q=8

200

N+13=24

N=11

300

N+21=34

N=13

400

N+41=53

N=12

500

D+122=214

D=92

Subtraction

100

Q-2=3

Q=5

200

N-23=17

N=40

300

N-150=0

N=150

400

45-N=22

N=23

500

N-124=24

N=148

Multiplication

100

3x=18

x=6

200

4N=100

N=25

300

9x=0

x=0

400

42N=84

N=2

500

13x=65

x=5

Division

100

20/N=4

N=5

200

100/N=10

N=10

300

49/N=7

N=7

400

300/N=10

N=30

500

Mark has 10 apples he gives 2 to each friend. How many friends does he have.

Friends=5

Mix-Up

100

421+N=522

N=101

200

530-N=220

N=310

300

32n=192

n=6

400

122/N=61

N=2

500

43n=172

n=4