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Study
Addition and Subtracting with regrouping
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519-450=
69
Oops!
Okay!
481-323=
158
Oops!
Okay!
472+254=
726
Oops!
Okay!
137+528=
665
Oops!
Okay!
840-525=
315
Oops!
Okay!
135+692
827
Oops!
Okay!
951-652=
299
Oops!
Okay!
451-218=
233
Oops!
Okay!
243+239=
482
Oops!
Okay!
726-419=
307
Oops!
Okay!
353-136=
217
Oops!
Okay!
466+19=
485
Oops!
Okay!
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