EXAMPLE 01A parent walkthrough
45 + 32 = ?
Show them: Add tens: 40 + 30 = 70
Say: Add ones: 5 + 2 = 7
Say: Combine: 70 + 7 = 77
FINAL ANSWER
77
MATH LEVEL A
Horizontal Addition & Subtraction — Level A Parent Guide
Last updated:
Horizontal addition and subtraction of two 2-digit numbers, with real mental-calculation fluency.
Grades 1-2 · approximate gradeTHE DEFINITION
What is Kumon Math Level A?
Kumon Math Level A (Horizontal Addition & Subtraction) is the 6th of 21 levels in the Kumon math program, where children learn horizontal addition and subtraction of two 2-digit numbers, with real mental-calculation fluency. It typically aligns with grades 1-2 schoolwork, though Kumon places children by ability rather than age, so the grade is a guide, not a rule.
Level A builds directly on Math Level 2A: Mental Addition & Subtraction and prepares children for Math Level B: Vertical Addition & Subtraction. It is one of 21 Kumon math levels covered in this independent parent guide series.
This is an independent parent guide, not an official curriculum or placement assessment. Topics and pace can vary; your child’s instructor can confirm their current work.
- Horizontal addition like 45 + 32
- Horizontal subtraction like 58 - 24
- Fast mental computation
- Self-correcting errors
- Daily timed practice habit
How do I help my child with Level A?
Work through one example together, then let your child try the next one alone. A few small problems to try together — let your child attempt each first, then use these prompts when they need a nudge.
Original examples in Kumon style, written for parents — not scanned worksheets.
EXAMPLE 02A parent walkthrough
58 - 24 = ?
Show them: Subtract tens: 50 - 20 = 30
Say: Subtract ones: 8 - 4 = 4
Say: Combine: 30 + 4 = 34
FINAL ANSWER
34
How can parents support Level A?
Short, calm, and daily beats long and pressured. These small habits make Level A stick — pick one and start tonight.
Split tens and ones — say it as a habit
If they stall, drop back to 2A-style make-10
Speed matters now: aim for 2 minutes per sheet
A LITTLE MORE CLARITY