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Cálculo mental
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4x4=
16
Oops!
Okay!
289+99=
388
Oops!
Okay!
6x4=
24
Oops!
Okay!
3x10=
30
Oops!
Okay!
4x10=
40
Oops!
Okay!
800-10=
790
Oops!
Okay!
351+128=
479
Oops!
Okay!
6:3=
2
Oops!
Okay!
8:2=
4
Oops!
Okay!
2:2=
1
Oops!
Okay!
800-50=
750
Oops!
Okay!
313+224=
537
Oops!
Okay!
5x3=
15
Oops!
Okay!
400-40=
360
Oops!
Okay!
290-15=
275
Oops!
Okay!
10:2=
5
Oops!
Okay!
3x3=
9
Oops!
Okay!
197-18=
178
Oops!
Okay!
196-9=
187
Oops!
Okay!
500-35=
465
Oops!
Okay!
6:2=
3
Oops!
Okay!
12:2=
6
Oops!
Okay!
155+146=
301
Oops!
Okay!
700-20=
680
Oops!
Okay!
222+317=
539
Oops!
Okay!
527-40=
487
Oops!
Okay!
6x0=
0
Oops!
Okay!
121+471=
592
Oops!
Okay!
4:2=
2
Oops!
Okay!
125+129=
254
Oops!
Okay!
283+226=
509
Oops!
Okay!
8:4=
2
Oops!
Okay!
180-99=
171
Oops!
Okay!
246-7=
239
Oops!
Okay!
5:1=
5
Oops!
Okay!
4x5=
20
Oops!
Okay!
190-15=
175
Oops!
Okay!
341+321=
662
Oops!
Okay!
5x4=
20
Oops!
Okay!
2x2=
4
Oops!
Okay!
600-15=
585
Oops!
Okay!
87+3+15=
105
Oops!
Okay!
560-25=
535
Oops!
Okay!
10:5=
2
Oops!
Okay!
8x2=
16
Oops!
Okay!
612+169=
781
Oops!
Okay!
4x5=
20
Oops!
Okay!
8x3=
24
Oops!
Okay!
389+98=
487
Oops!
Okay!
371-50=
321
Oops!
Okay!
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