Grade 2 Subtraction Within 100 - Medium
A medium grade 2 worksheet for Subtraction.
Worksheet snapshot
- Subtraction (within 100)
- Key concepts: Understanding core subtraction (within 10) concepts for Grade 2; Applying subtraction (within 10) strategies appropriate to Grade 2
- Students develop fluency with subtraction (within 10) at Grade 2 level, applying strategies more independently and solving increasingly complex problems.
- Apply it: Subtraction (within 10) at the Grade 2 level connects to everyday situations students encounter: problem-solving in daily life, making sense of quantities and relationships, and building mathematical literacy for future learning.
- 59 - 26 =
- 89 - 87 =
- 89 - 10 =
About Subtraction (within 10)
Subtraction is the operation of finding the difference between quantities or removing a part from a whole. Students learn to see subtraction as both 'taking away' and 'finding the difference,' developing flexibility in their mathematical thinking.
Subtraction is fundamental to mathematics and everyday life. It's used for comparing quantities, calculating change, measuring differences, and solving problems involving 'how many more' or 'how many left.' Strong subtraction skills support learning negative numbers, algebraic thinking, and proportional reasoning.
Subtraction (within 100)
Subtract two-digit numbers within 100 using place value, decomposing tens, and regrouping; solve one- and two-step problems.
This medium level worksheet:
Subtract two 2-digit numbers with one regroup; record the decomposition of a ten into ones.
Key Concepts
- Decompose tens/ones to subtract
- Record and track regrouping
- Check differences with inverse or estimate
Prerequisite skills
Fluent within 20; add/subtract a 2-digit and 1-digit number; understand tens/ones.
Teaching Strategies
Model decomposing a ten with base-ten blocks; show open number line jumps; write each regroup explicitly.
Assessment ideas
Test fact fluency with timed checks. Include subtraction word problems requiring interpretation. Ask students to explain their strategy. Have students check subtraction using addition. Present problems requiring regrouping and evaluate understanding.
Common Challenges
Subtracting digit-by-digit without regrouping; forgetting to reduce tens after a regroup; misreading word problems.
Real-World Applications
Making change, comparing prices/lengths, and how many more/how many left situations.
Extension Activities
Estimate first, then subtract exactly and compare; solve a two-step add/subtract problem and justify the operation choice.
Parent Tips
When subtracting money or distances, have your child show the regrouping and then add the answer back to check.