1.NBT.C.5 1st Grade Addition Worksheets PDF

1st Grade Addition Worksheets Printable PDF with Answers. Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.

Download 1.NBT.C.5 1st Grade Addition Worksheets PDF – Set 1
Download 1.NBT.C.5 1st Grade Addition Worksheets PDF – Set 2
Download 1.NBT.C.5 1st Grade Addition Worksheets PDF – Set 3
   
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