FORGE
An incremental smelting chain. Every problem struck on the anvil pays sparks, sparks buy stations, and the stations run themselves — the arithmetic is the throttle on a number that only goes up.
Addition & subtraction
The pack suggests age 5 and up. The difficulty itself follows the player, not the age.
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What it covers
FORGE draws its questions from these parts of the curriculum. Which of them a player sees, and how hard the questions are, follows the player.
Addition & subtraction
- Column addition without regrouping
- Column subtraction without regrouping
- Multi-digit addition with regrouping
- Multi-digit subtraction with regrouping
- Adding a short addend with regrouping
- Subtracting a short subtrahend with regrouping
- Subtracting across zero