Multiplication & Division
Twin River City has lost its balance — its two rivers no longer work together. Guided by Kiko the fox, your child restores the city across seven themed zones, from the Times Tables Bridge to the Mixed Puzzle Square, discovering that multiplication and division are two halves of the same idea.
The book builds from times tables and fact families into multiplication, long (multi-digit) multiplication, division and remainders, finishing with mixed problem-solving that weaves both operations together. It reinforces the Grade 3 / Year 4 / 3rd Class curriculum (ages 8–9) through puzzles and word problems rather than endless rows of sums.
Every zone hides a secret colour. Crack its final challenge to unlock it, then colour your map and bring Twin River City back to life.
What’s inside
Every CalculoKids book turns a school-level skill into a quest. Children don't grind through worksheets — they explore themed zones, solve puzzles and restore a world that has lost its balance. The maths is real; the adventure is what keeps them turning the page.
