Number And Operations In Base Ten
Outcomes
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Understand Place Value.
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2.NBT.1
Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:Examples
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2.NBT.2
Count within 1000; skip-count by 5s, 10s, and 100s.Examples
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2.NBT.3
Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.Play Activities 102Examples
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2.NBT.4
Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.Examples
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2.NBT.1
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Use Place Value Understanding And Properties Of Operations To Add And Subtract.
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2.NBT.5
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.Examples
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2.NBT.7
Add and subtract within 1000, 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. Understand that in adding or subtracting three- digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.Examples
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2.NBT.8
Mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900.Examples
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2.NBT.5