add
subract and multiply
multiply and add
subtract and add
common sence
100
15 + b = 28
What is b=13
100
44*1-c=42
What is c=2
100
2*2+K=10
What is K=6
100
28-4+Z=27
What is Z=3
100
2+2=a
What is a=4
200
2,000+4+900+50+c=4,354
What is c=1,400
200
163*11-S=1693
What is S=100
200
2*4+S=107
What is S=99
200
21+2-R=22
What is R=1
200
3*3=r
What is r=9
300
50,000+40,000+Y+20+600+100=90,722
What is Y=2
300
144*50-Q=1148
What is Q=52
300
9*9+G=86
What is G=5
300
22+23-d=40
What is d=5
300
9*9=w
What is w=81
400
100,000+20,000+3,000+951+N+82+7=124,040
What is N=0
400
2,000*252-L=502,000
What is L=2,00
400
5*5+T=85
What is T=60
400
40+22-f=22
What is f=40
400
8*9=t
What is t=72
500
124,040+A+40+24,040=170,320
What is A=22,2222
500
240*22-P=5140
What is P=140
500
96*2+U=230
What is U=38
500
49+78-w=107
What is w=20
500
12*12=u
What is u=144
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