Week 01 — 2026.10.02 – 10.04

October begins

Fri 2 and Sun 4 October 2026

October opens with new units.Tue 29 and Wed 30 September were September's spare days (week 05). These two sessions finish that week and start dividing decimals for the elder, rounding for the younger. Friday introduces the unit; Sunday is a costume, corrections and one puzzle problem.
This week each child also has one stretch sheet — not recorded, and failing it is fine.
日本語EnglishBahasa Indonesia
01

Read this first

Theory
Younger, Gr 4 · Friday

Long division

Guess, multiply, subtract, bring down. The remainder depends on the situation.

theory page · 2 figures
Any time · three languages

Terms

About 210 maths and science terms, searchable.

reference · printable
02

Worksheets

Worksheets

Print one day at a time, or the whole week in one go — it is the same content either way. Neither one contains the answers. Those are the last card, printed separately.

Elder son · Grade 5

Whole week

October, week 1

Dividing by a decimal (always draw the diagram), then sport: batting averages and points per game, with corrections and one puzzle problem.

10 A4 sheets · 3 days
Fri 2 October

Dividing by a decimal, in words

Maths B (new unit · word problems)

13 questions + 1 optional · 4 A4 sheets
Sun 4 October

Batting averages, points per game + corrections

Costume 2 · sport + corrections

10 questions · 2 A4 sheets
From Sun 4 October, any time

Stretch — "per one" from tables and graphs

Stretch (not recorded)

12 questions · 4 A4 sheets
For a parent

Answers and reasoning

This week's answers for Elder son · Grade 5 — a parent should keep them.

4 A4 sheets

Younger son · Grade 4

Whole week

October, week 1

Rounding and estimating, then a costume (FPS or food) with corrections and one puzzle problem.

12 A4 sheets · 3 days
Fri 2 October

Rounding

Maths B (new unit)

12 questions · 4 A4 sheets
Sun 4 October

Choose one of these two

Costume 2 + corrections

12 questions · 4 A4 sheets
From Sun 4 October, any time

Stretch — level up

Stretch (not recorded)

11 questions · 4 A4 sheets
For a parent

Answers and reasoning

This week's answers for Younger son · Grade 4 — a parent should keep them.

4 A4 sheets
03

How to use them

How to use

Tuesday, Wednesday, Friday, Sunday — four sessions of forty minutes. 5 min arithmetic, 20 min new material, 10 min corrections, 5 min kanji.

Print a single day or the whole week. Each framed section is one A4 sheet, and a day comes to exactly two or four of them — one or two pieces of paper if you print both sides.

The answers are a separate page, for a parent to print alone and keep.

The three language versions are the same problems. There is no need to do the maths three times. Solve one, and read the other two. Knowing the problem already is what makes the unfamiliar language guessable.