Reasonwell
Grade 2 Worksheets
2.NBT.B.5

Subtraction Within 100 Worksheets

Two-digit subtraction without regrouping, built for place-value alignment and confident checking. On the night shift with Commander Comet in the Space Cargo Bay, pods hold ten and crates hold one — a calm, no-borrowing sheet that builds the column habit before regrouping.

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Skill Focus

What this worksheet practices

Subtraction within 100 should feel organized, not mysterious. This set keeps every ones-place subtraction possible without exchange, so students can practice lining up places and checking the direction of the subtraction. It is a bridge between basic facts and regrouping work.

A common mistake is to subtract the smaller digit from the larger digit in each column, even when that changes the problem. Because these items do not require regrouping, they give you a clean way to catch whether a child understands that the top number is the starting amount.

Use the answer key for quick checking, then ask for one explanation when an error appears. "What did you subtract in the ones place?" is usually enough. When these are steady, students are ready for subtraction with regrouping, word problems, and mixed review pages.

How Reasonwell checks worksheet material →
Worked Examples

How to approach this skill

Subtraction within 100 practice is easier to review when the student can explain the steps, not just the answer.

01

79 - 34

  1. Subtract ones: 9 - 4 = 5.
  2. Subtract tens: 7 tens - 3 tens = 4 tens.
  3. Answer: 45.
02

86 - 52

  1. 6 ones - 2 ones = 4 ones.
  2. 8 tens - 5 tens = 3 tens.
  3. Answer: 34.
03

63 - 40

  1. 3 ones - 0 ones = 3 ones.
  2. 6 tens - 4 tens = 2 tens.
  3. Answer: 23.
Problem Mix

What appears on the page

These sample prompts come from this worksheet set's structured item data.

1 Arithmetic

79 - 34

2 Arithmetic

86 - 52

3 Arithmetic

65 - 21

4 Arithmetic

98 - 43

5 Arithmetic

54 - 22

6 Arithmetic

77 - 16

7 Arithmetic

89 - 35

8 Arithmetic

63 - 40

Printable downloads

Print the student sheet and answer key.

Use the worksheet for student work and the answer key for quick checking. The files are kept separate so the key does not sit on the same page as the practice.

Teachers: use these however you wish — print a class set, share with colleagues, send copies home. No permission needed, ever.

Student worksheet → Answer key →
FAQ

Subtraction within 100 questions

Does this set include regrouping?

No. It is intentionally no-regrouping subtraction within 100.

Why include problems like 63 - 40?

Zeros help students see that the tens and ones places still matter.

How can we check subtraction?

Add the answer back to the smaller number. The sum should be the starting number.

Related Grade 2 Sets

Practice nearby skills

Move between focused pages when a mistake pattern points to a nearby skill.

2.NBT.B.5

Subtraction with regrouping

Two-digit subtraction with regrouping using a balloon-bundle model to show one ten becoming ten ones.

Open set → 2.NBT.B.5

Addition within 100

Two-digit addition practice where ones stay under ten, so students can focus on place-value alignment. Down at Pelican Pete's Harbor Depot, every cargo manifest keeps the ones under ten — containers hold ten, barrels hold one — so kids practice lining up tens and ones without a single spill.

Open set → 2.OA.A.1

Word problems

Fair-themed addition, subtraction, compare, and two-step word problems with bar models for each story.

Open set →
Grade 2 math workbook

Grade 2 Math Workbook

These free worksheets give focused practice now. The full-color workbook is in development for a broader, structured Grade 2 math path with parent-readable explanations.

View workbook