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Adding 3-digit and 2-digit Multiples of Ten
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310 + 90
400
Oops!
Okay!
240 + 30
270
Oops!
Okay!
340 + 80
420
Oops!
Okay!
360 + 70
430
Oops!
Okay!
630 + 80
710
Oops!
Okay!
750 + 70
820
Oops!
Okay!
920 + 60
980
Oops!
Okay!
850 + 70
920
Oops!
Okay!
120 + 30
150
Oops!
Okay!
870 + 60
930
Oops!
Okay!
140 + 40
180
Oops!
Okay!
610 + 90
700
Oops!
Okay!
790 + 80
870
Oops!
Okay!
200 + 30
230
Oops!
Okay!
380 + 60
440
Oops!
Okay!
390 + 80
470
Oops!
Okay!
710 + 90
800
Oops!
Okay!
490 + 60
550
Oops!
Okay!
690 + 80
770
Oops!
Okay!
150 + 70
220
Oops!
Okay!
160 + 20
180
Oops!
Okay!
890 + 80
970
Oops!
Okay!
770 + 60
830
Oops!
Okay!
180 + 10
190
Oops!
Okay!
670 + 60
730
Oops!
Okay!
520 + 90
610
Oops!
Okay!
880 + 70
950
Oops!
Okay!
100 + 20
120
Oops!
Okay!
560 + 70
630
Oops!
Okay!
730 + 80
810
Oops!
Okay!
540 + 80
620
Oops!
Okay!
190 + 80
270
Oops!
Okay!
810 + 90
900
Oops!
Okay!
220 + 20
240
Oops!
Okay!
650 + 70
720
Oops!
Okay!
470 + 80
550
Oops!
Okay!
420 + 90
510
Oops!
Okay!
180 + 60
240
Oops!
Okay!
260 + 20
280
Oops!
Okay!
450 + 70
520
Oops!
Okay!
280 + 10
290
Oops!
Okay!
830 + 80
910
Oops!
Okay!
910 + 70
980
Oops!
Okay!
930 + 60
990
Oops!
Okay!
940 + 50
990
Oops!
Okay!
230 + 90
320
Oops!
Okay!
580 + 60
640
Oops!
Okay!
260 + 50
310
Oops!
Okay!
270 + 80
350
Oops!
Okay!
290 + 70
360
Oops!
Okay!
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