2.NBT.B.5 — Fluently add and subtract within 100 using strategies based on place value.

What this standard asks students to do

2.NBT.B.5 is a 2nd grade Common Core standard in the Number & Operations in Base Ten strand. It asks students to: fluently add and subtract within 100 using strategies based on place value. Teachers typically address it during the use place value and properties to add and subtract cluster, alongside the related standards listed below. FoxFish generates printable worksheets, auto-graded quizzes, and flashcard sets aligned to this standard in seconds.

Sample questions aligned to 2.NBT.B.5

1. Example 1

   56 + 38 = ?

2. Example 2

   82 − 47 = ?

3. Example 3

   29 + 64 = ?

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Common student mistakes

Build distractors and reteach prompts around the errors students actually make on this standard.

• 1Forgetting to regroup when the ones column sums to 10 or more.
• 2Subtracting the smaller digit from the larger one regardless of position (e.g., 52 − 37 = 25 instead of 15).
• 3Lining up numbers by the leftmost digit instead of by place value.

Teacher FAQ

Related standards in this cluster

• 1.NBT.C.4Add within 100, including adding a two-digit number and a one-digit number, and adding multiples of 10.
• 2.NBT.B.7Add and subtract within 1000 using concrete models or drawings and strategies based on place value.

Teacher guides for 2.NBT.B.5

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