1.NBT.6 (Mathematics)
Standard Identifier:
1.NBT.6
Content Area:
Mathematics
Grade:
1
Domain:
Number and Operations in Base Ten
Cluster:
Use place value understanding and properties of operations to add and subtract.
Standard:
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.
Use place value understanding and properties of operations to add and subtract.
Standard:
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.
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