Break Apart Numbers to Subtract
Break apart numbers to make subtraction easier!
2nd Grade - Math - Subtract within 100
About This Skill
On Iqleel, Grade 2 students will learn to break apart numbers to subtract. They will use mental math strategies to decompose the number being subtracted into smaller parts—often to get to a ten—making the calculation easier. This approach builds procedural reliability and strengthens understanding of place value.
Skills & Topics
- Number Sense and Operations
- Whole Numbers
- Place Value
- Subtraction
- Subtract
- Equations
- Partitioning
- Minus Sign
- 2-Digit Numbers
- Mental Math
Curriculum Alignment
- AC9M2N04: add and subtract one- and two-digit numbers, representing problems using number sentences and solve using part-part-whole reasoning and a variety of calculation strategies
- ENG-MATH-Y2-AS.2: Solve problems with addition and subtraction by applying their increasing knowledge of mental and written methods.
- NY-2.NBT.5
- 2.NBT.B.5: Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
- 2.NBT.B.5
- MA.2.NSO.2.3
- MATH.2.4.B
- G2.B2.4
- BC.MATH.G2.CONTENT.04
- AB.MATH.G2.MAT2-OI1-GQ2-LO1
- ZA.CAPS.MATH.G2.NOR.1.12
- SG.MATH.P2.NA.WN.2.1