| Review | Easy | Medium | Hard |
|---|---|---|---|
|
52
25+27=
|
63
105-42=
|
74
724-650=
|
344
802-458=
|
|
35
79-34=
|
452
652-200=
|
414
643-229=
|
465
952-487=
|
|
122
192-70=
|
192
210-18=
|
634
960-326=
|
89
880-791=
|
|
The Ones
What place value are you supposed to start with when adding or subtracting?
|
123
324-201=
|
8
475-467=
|
499
998-499=
|
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