# Mental Arithmetic, Or, First Lessons in Numbers for Children

Clark & Maynard, 1864 - 120 páginas

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### Contenido

 Sección 1 3 Sección 2 5 Sección 3 25 Sección 4 41
 Sección 5 56 Sección 6 70 Sección 7 84 Sección 8

### Pasajes populares

Página 73 - forty L " fifty. LX " sixty. LXX ' " seventy. LXXX " eighty. XC " ninety. C " one hundred. CI " one hundred and one. CX " one hundred and ten. CC " two hundred. CCC " three hundred. CCCC " four hundred. D
Página 72 - six. 7, seven. 8, eight. 9, nine. 10, ten. 1 1 , eleven. 12, twelve. 13, thirteen. 14, fourteen. 15, fifteen. 16, sixteen. 17, seventeen. 18, eighteen.
Página 49 - pounds of figs ? 7. There are eight rows of trees in an orchard, and seven trees in a row : how many trees are there in the orchard ? 8. In New York, eight shillings make a dollar : how many shillings are there in eight New York dollars
Página 73 - nine. X " ten. XI " eleven. XII " twelve. XIII " thirteen. XIV " fourteen. XV " fifteen. XVI " sixteen. XVII ' seventeen. XVIII ' eighteen. XIX ' nineteen. ! XX ' twenty. ' XXI ' twenty-one. XXII ' twenty-two. XXX denote thirty. • XL " forty L " fifty. LX
Página 71 - 22. If land is ten dollars an acre, how many acres can a man buy for eighty dollars ? 23. At seven- dollars a yard, how many yards of cloth can be bought for sixty-three dollars
Página 97 - many parts are expressed by the fraction. NB The number below the line is called the denominator, because it gives the name, as halves, thirds, fifths, &c., to the fraction. , The number above the line
Página 78 - 35. A farmer sold 10 bushels of oats, at 3 shillings a bushel, and took 7 yards of flannel, at 4 shillings a yard, and the rest in money: how much money did he receive
Página 90 - cents ? Of 15 cents ? Of 24 cents? Of 30 cents? Observation.—From the preceding examples, the learner will perceive that a half of a number is equal to as many units as 2 is contained times in that num.
Página 62 - a barrel, can you buy for twenty dollars? 4. At five cents a pound, how many pounds of \ lard can be bought for thirty cents ? 5. James has twenty-five cents which he wishes to lay out in lemons, which cost five cents
Página 32 - 4. A man bought a cow for ten dollars, and gave a barrel of flour worth five dollars, and paid the rest in money : how much money did he pay ? 6. A