A boundary number-line booklet · own paper
Whole supplied source
Fictional quantity cards: Sound-word index. First 890 labels; second 900 labels; third 910 labels. Each number counts the same kind of label, not prices or observed stock. A hundred has the value of ten tens; a ten has the value of ten ones. Represent whole quantities, compare their places and explain an order. For a two-page boundary booklet, the first page uses five equally spaced ticks labelled 880,890,900,910,920 from left to right, each interval worth ten labels. The separate boundary page uses equally spaced one-label ticks 998,999,1000. Compare 999 with 1000 and explain what changes when one label is added to 999; this is a supplied mathematical representation, not counted real stock.