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Friday 7 June 2013

My math challenge


Before / After
to 1,000
LI: To write the numbers that come before and after then add and subtract ten from the number in the middle







10
less
1
less
Number
1
more
10 more
148
157
158
159
168
229
238
239
240
249
394
403
404
405
414
977
986
987
988
997
124
133
134
135
144
61
70
71
72
81
687
696
697
698
707
821
830
831
832
841
989
998
999
1000
1009
407
416
417
418
427
256
265
266
267
276
389
398
399
400
409
891
900
901
902
911
527
536
537
538
547


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