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Series of Operation, Mental Subtraction, Problem ...
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8,000 - (2,574 + 3,061)
2,365
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Okay!
75 - 25
50
Oops!
Okay!
80 - 15
65
Oops!
Okay!
65 - 30
35
Oops!
Okay!
1,265 - (475 + 427)
363
Oops!
Okay!
37 - 2
35
Oops!
Okay!
5,874 - 278 + 1,785 = N
7,381
Oops!
Okay!
3,468 - (286 + 745)
2,437
Oops!
Okay!
Mary grew 264 roses in her garden. She picked 197 roses. How many roses were left?
There are 67 roses left.
Oops!
Okay!
19,675 + 387 - 17,654 = N
2,408
Oops!
Okay!
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