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Four digits addition with regrouping
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5.321 + 1.693 = ...
7.014
Oops!
Okay!
7.950 + 1.175 = ...
9.125
Oops!
Okay!
6.421 + 2.256 = ...
8.677
Oops!
Okay!
4.721 + 5.184 = ...
9.905
Oops!
Okay!
2.356 + 1.128 = ...
3.484
Oops!
Okay!
1.934 + 3.940 = ...
5.874
Oops!
Okay!
4.432 + 2.356 = ...
6.788
Oops!
Okay!
6.901 + 1.168 = ...
8.069
Oops!
Okay!
4.890 + 1.732 = ...
6.622
Oops!
Okay!
1.345 + 2.567 = ...
3.912
Oops!
Okay!
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