Examples.—Li havas dudekojn da ĉevaloj, centojn da ŝafoj, kaj milojn da birdoj = He has scores of horses, hundreds of sheep, and thousands of birds. Tiuj ludkartoj estas la kvaro pika kaj la seso kera = Those cards are the four of spades and the six of hearts. Tiu cifero estas oko = That figure is an eight.
Multiples (Numeraloj multoblaj).
119. Multiples are formed by the addition of the suffix -OBL- to the cardinals, and then adding A, E, or O to mark the adjective, adverb, or noun. They can also be formed into transitive verbs by the suffix -IGI-, or intransitive by the suffix -IĜI-.
Examples.—Unuobla = Single. Unuoble = Singly. Duobla = Double, twofold. Duoble = Doubly. La duoblo = The double. Duobligi = To double, to duplicate. Duobliĝi = To become double. Triobla = Triple, threefold. Trioble = Trebly. La trioblo = The treble (of). Triobligi = To treble, to triplicate. Kvarobla = Fourfold, quadruple. Kvaroble = Quadruply. Kvaroblo = A quadruple. Kvarobligi = To quadruple, to make fourfold. Kvarobliĝi = To become quadruple. Sepobla = Sevenfold, septuple. Centoblo = A centuple. Kvinoble sep estas tridek kvin = Five times (fivefold) 7 is 35. Naŭoble ok estas sepdek du = Nine times (ninefold) 8 is 72. Kvaroble kvar estas dek ses = Four times four is 16. Dudek estas la kvaroblo de kvin = Twenty is the quadruple of five. Duobla fadeno estas pli forta ol unuobla = A double thread is stronger than a single (one). Kvarobligante sepdek kvin vi ricevas la centoblon de tri = By quadrupling 75 you get the centuple of 3.
Fractional Numbers (Numeraloj nombronaj).
120. Fractional numbers are formed by the addition of the suffix -ON- to the cardinals, and then adding A, E, or O to mark the adjective, adverb, or noun, as:—Duona = half, duone = by halves, duono = a half (1⁄2), triona = third, trione = by thirds, triono = a third (1⁄3).
Examples.—La kvarona parto de dudek kvar estas la duono de dek du, tio estas ses = The fourth part of 24 is the half of 12, that is 6. Unu triono = One third (1⁄3). Tri okonoj = Three eighths (3⁄8). Neniam faru ion poduone = Never do anything by halves. Duone ses estas tri = half of six is three.
The Collectives (Numeraloj kolektaj).
121. The collectives are formed by the addition of the suffix -OP- to the cardinals, and then adding A or E to mark adjectives or adverbs, as:—Duopa = double, two together, duope = by twos, in pairs, triope = in threes, in triplets, dekope = by tens.
Example.—Kvinope ili sin ĵetis sur min = Five together (five at a time) they threw themselves upon me.