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Tuesday, 30 July 2019

Adding and Subtracting 10s on a Thousand Boards

The table below is a snapshot from a Thousands Board. Add in all the missing numbers by adding 10 or 1, and by subtracting 10 or 1.

346
347
348
349
350
356
357
358
359
360
366
367
368
369
370
376
377
378
379
380


The table below is a snapshot from a Thousands Board. Add in all the missing numbers by adding 10 or 1, and by subtracting 10 or 1.



713
714
715
716
717
723
724
725
726
727
733
734
735
336
737
743
744
745
746
747




The table below is a snapshot from a Thousands Board. Add in all the missing numbers by adding 10 or 1, and by subtracting 10 or 1.



201
202
203
204
205
211
212
213
214
215
221
223
224
225
226
231
232
233
234
352


The table below is a snapshot from a Thousands Board. Add in all the missing numbers by adding 10 or 1, and by subtracting 10 or 1.



543
544
545
546
547
553
554
555
556
557
563
564
565
566
567
573
574
575
576
577

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