Common Core · Mathematics
2.NBT.5
Grade 2 · Number & Operations in Base Ten
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
- Official code
- CCSS.MATH.CONTENT.2.NBT.5
- Short code
- 2.NBT.5
- Subject
- Mathematics
- Grade
- Grade 2
- Domain
- Number & Operations in Base Ten
More Grade 2 Number & Operations in Base Ten standards
2.NBT
Number and Operations in Base Ten
2.NBT.1
Understand that the three digits of a three-digit number represent amounts of...
2.NBT.1a
100 can be thought of as a bundle of ten tens — called a "hundred."
2.NBT.1b
The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three,...
2.NBT.2
Count within 1000; skip-count by 5s, 10s, and 100s.
2.NBT.3
Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.
2.NBT.4
Compare two three-digit numbers based on meanings of the hundreds, tens, and ones...
2.NBT.6
Add up to four two-digit numbers using strategies based on placevalue and properties...
2.NBT.7
Add and subtract within 1000, using concrete models or drawings and strategies based...
2.NBT.8
Mentally add 10 or 100 to a given number 100—900, and mentally subtract 10 or 100 from...
2.NBT.9
Explain why addition and subtraction strategies work, using place value and the...
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