Equation Completion

Overview

Equation Completion trains fast mental arithmetic in the digit entry response format used by cut-e (Aon): the scales eql test, carried in Aon's smartPredict era under the Numeracy and digitChallenge branding. Each item shows an equation with empty gaps, visible operators drawn from plus, minus and multiplication, and a given result. You fill the gaps from a tray of digit tiles 1 to 9, and each tile exists only once per item: a gap pair summing to 10 needs 4 and 6, never two 5s. Select a tile first, then click a gap to place it, exactly as in the real test, and the Next arrow appears only when every gap is filled. Any completion that makes the equation true under the standard order of operations counts as correct. The real test presents around 15 questions in 5 minutes, and the 5 minute preset mirrors that pacing; difficulty grows within the same paradigm through more gaps, longer chains and placements where multiplication precedence matters, never through double-digit tiles. The Multiple Choice mode is our own practice variant: the same arithmetic, but you pick the missing number or operator from four options, including operator gaps the real eql never shows. It remains a useful drill for the underlying skill, which also powers everyday flight-deck estimation.

Assessments

Could show up in cut-e / Aon-based selections.

Airline mappings are based on public information and may change.

Example: fill the gaps with digit tiles

You are shown an equation with empty gaps, fixed operators and a given result. Select a digit tile first, then click a gap to place it; the tile's slot in the tray goes empty, because each digit exists only once. The Next arrow appears when every gap is filled. Here the item ▢ + ▢ = 11 has been answered with 5 and 6.