NY Next Generation Math NY-2.NBT.5
The Standard
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
New York State Next Generation Mathematics Learning Standards
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students fluently add and subtract within 100 using place value, operation properties, and relationships between addition and subtraction. They choose an efficient strategy and explain it.
What Mastery Looks Like
- A student solves 47 + 36 by combining tens and ones and composing a new ten. The student solves 83 - 29 and checks the difference with addition.
Common Misconceptions
- Students may combine tens with ones, regroup without preserving value, or subtract the smaller digit from the larger in each place. They may use a procedure without checking reasonableness.
How to Assess It
- Ask students to solve 58 + 27 and 91 minus 46, then explain one strategy with place-value language.
Lesson moves
Ways to Teach It
Model sums and differences with base-ten blocks, then connect trades to written place-value steps.
Ask students to compare two correct strategies for 64 minus 28.
Play strategy match with equations, place-value drawings, decompositions, and related-fact checks.
Update a classroom inventory after additions and removals while keeping totals within 100.
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Printable NY-2.NBT.5 Worksheet
A ready-to-print activity worksheet aligned to NY-2.NBT.5, with an answer key for the teacher on its own page. No account needed.
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Related Standards
- NY-2.NBT.7.a
Add and subtract within 1000, using concrete models or drawings, and strategies based on place value, properties of operations, and/or the relationship between ...
- NY-3.NBT.2
Fluently add and subtract within 1,000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition ...
- NY-2.OA.2.a
Fluently add and subtract within 20 using mental strategies. Strategies could include: counting on, making ten, decomposing a number leading to a ten, using the...
- NY-1.OA.6.b
Fluently add and subtract within 10.
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