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Study
Addition and subtraction without regrouping
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300,123 - 200,000
100,123
Oops!
Okay!
500 - 200
300
Oops!
Okay!
6,256 - 6,156
100
Oops!
Okay!
3,721 + 20
3,741
Oops!
Okay!
151 + 623
774
Oops!
Okay!
600 + 50 + 5
655
Oops!
Okay!
560 + 1,300
1,860
Oops!
Okay!
21,500 - 500
21,000
Oops!
Okay!
4,444 - 44
4,400
Oops!
Okay!
45,000- 3,000
42,000
Oops!
Okay!
2,000 - 1,000
1,000
Oops!
Okay!
1,000 + 200
1,200
Oops!
Okay!
152 + 245
397
Oops!
Okay!
1,000 - 500
500
Oops!
Okay!
1,000 + 500 + 60 + 3
1,563
Oops!
Okay!
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