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Study
SUBTRACTION RANDOM
0
%
0
0
0
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400-164
236
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Okay!
Estimate the difference between 667-289
400
Oops!
Okay!
1,000-452
548
Oops!
Okay!
Estimate the difference between 5,697-3,785
2,000
Oops!
Okay!
17,293-3,129
14,164
Oops!
Okay!
Estimate the difference between 674-356
300
Oops!
Okay!
7,342-357
6,985
Oops!
Okay!
Estimate the difference between 712-202
500
Oops!
Okay!
896-456
440
Oops!
Okay!
5,784-4,536
1,248
Oops!
Okay!
6,000-421
5,579
Oops!
Okay!
784-223
561
Oops!
Okay!
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