Answer Keys: Number and Operations in Base Ten, Math 1st Grade Common

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Answer Keys: Number and Operations in Base...

Welcome to our Common Core Printables Answer Key Section for Number and Operations in Base Ten - 1st Grade Math!

Here you will find the answers to our thousands of practice worksheets tied to the Common Core State Standards.
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Number and Operations in Base Ten - 1st GradeWrite the number of tens and ones (CCSS.Math.Content.1.NBT.B.2)Order two 2-digit numbers from smallest to largest (CCSS.Math.Content.1.NBT.B.3)Order Three 2-Digit Numbers from Smallest to Largest (CCSS.Math.Content.1.NBT.B.3)Order Two 2-Digit Numbers from Largest to Smallest (CCSS.Math.Content.1.NBT.B.3)Order Three 2-Digit Numbers from Largest to Smallest (CCSS.Math.Content.1.NBT.B.3)Compare Two 2-Digit Numbers (>,<,=) (CCSS.Math.Content.1.NBT.B.3)Add a two-digit and a two-digit multiple of ten number so that the total is within 100. (CCSS.Math.Content.1.NBT.C.4)Add two one-digit numbers (CCSS.Math.Content.1.NBT.C.4)Add a two-digit and one-digit number so that the total is within 100 (CCSS.Math.Content.1.NBT.C.4)Find 10 more, given two-digit number (CCSS.Math.Content.1.NBT.C.5)Find 10 less, given two-digit number (CCSS.Math.Content.1.NBT.C.5)Subtract multiples of 10 from multiples of 10 (CCSS.Math.Content.1.NBT.C.6)