Standards Map

Mathematics > Grade 1 > Number and Operations in Base Ten
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Mathematics | Grade : 1

Domain - Number and Operations in Base Ten

Cluster - Use place value understanding and properties of operations to add and subtract.

[1.NBT.C.5] - Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used. Identify arithmetic patterns of 10 more and 10 less than using strategies based on place value.

Resources:

Predecessor Standards:

No Predecessor Standards found.

Successor Standards:

  • 2.OA.A.1
    Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem. See Glossary, Table 1
  • 2.NBT.B.5
    Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

Same Level Standards:

  • 1.NBT.B.2
    Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
  • 1.NBT.C.6
    Subtract multiples of 10 in the range 10–90 from multiples of 10 in the range 10–90 (positive or zero differences), using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.