FIFTEENTH LESSON.

1. Count units or ones until you have ten of them, thus, one one, two ones, three ones, four ones, and so on to ten ones, which you may call one ten, or ten. Count tens until you have ten of them; thus, one ten, two tens, and so on to ten tens, which you may call ten tens, or one hundred. Now, count hundreds until you have ten of them; thus, one hundred, two hundred, and so on to ten hundred, which you may call one thousand. They are written thus ;

2. How do you write one thousand in words? in letters? in figures? How many figures must be used to write one thousand? What are these four figures? Write one in figures; eleven; one hundred and eleven, one thousand one hundred and eleven.

3. Read these; 1, 11, 111, 1111, 2, 22, 222, 2222, 9, 99, 999, 9999, 10, 100, 1000, 90, 900, 9000, 91, 901.

TABLE OF TIME MEASURE.'

Used to estimate time. Its names are centuries, years, months, days, hours, minutes, and seconds.

60 Seconds (sign, sec.) are equivalent to 1 Minute

min.

4. Read these; 9yr; 3mo.; 12da. ; 7C.; 10min.; 5h. 40sec.; 9mo.; 11C. 29yr 11mo. 19da. 21h. 49min. 50sec.

For object lessons in Time Measure, see Arith. Nó. II.

SIXTEENTH LESSON.

1. Count ten ones; and tell what they make or equal; ten tens; ten hundreds. Count thousands till you have ten of them. You may call ten thousand one ten thousand. It is written thus;—

2. How do you write one thousand in Roman Numbers? ten thousand? X means ten, and the bar over it means thousand. How many and what figures are used to write one thousand? to write ten thousand? Write nine thousand; ninety thou.; nine thou. seven hun. 3. Read these; 1.000; 10.000; 2.000; 20.000; 22.000; 22.002; 5.000; 45.000; 4.987; 44.987; 7.684. LONG MEASURE.'

One inch.

Two inches.

Used to measure length or distances. Its names are miles, furlongs, rods, yards, feet, and inches.

12 inches (in.)

3 feet

5 yards

40 rods

8 furlongs

equal 1 foot

1 rod, pole or perch - rd, p., per.

fur.

- mi.

4. Read these; 9mi.; 5ft; 8rd; 2fur.; 11in.; 5yd.

TABLE OF SURFACE OR SQUARE MEASURE. Used in measuring surfaces, as of land, lumber, painting, papering, plastering, etc. Its names are square miles, acres, roods, square rods, square yards, square feet, and square inches.

144 square inches (sq. in.) equal 1 square foot

9 square feet

30 square yards

40 square rods

4 roods

640 acres

5. Read these; 1000A.; 10000sq.in.; 4sq.in.; 909R.

For object lessons in this Measure, see Arith. No. II.

SEVENTEENTH LESSON.

1. Count 10 ones and tell what they equal; 10 tens; 10 hundreds; 10 thousands; 10 ten thousands. You may call 10 ten thousands one hundred thousand. It is written thus;—

2. How many does C mean? What does the Bar over C mean? What do C and the Bar together mean? How many and what figures are used to write one hundred thousand? to write sixty thousand? seven thou.? three hundred thou.? forty-nine thou.?

3. Read these; 6.007; 66.007; 666.007; 660.007; 600.007; 8.765; 98.705; 198.005.

TABLE OF SOLID OR CUBIC MEASURE.'

Used in measuring the solidity of bodies, as of timber, stones, earth, etc. Its names are cords, solid yards, solid feet, and solid inches. 1728 solid or cubic inches-1 solid or cubic foot s.ft or c.ft.

4. Read these; 9s.ft; 103c.; 2001cu.ft; 3009s.yd; 900087cu.yd; 1005s.in.; 1050cu.in.; 1505cu.in.

TABLE OF DRY MEASURE.

Used to measure grain, fruits, roots, etc. Its names are bushels, pecks, quarts, pints, and gills.

5. Read these; 931000bu.; 3pk; 7ft; 9pt 1gi. 6. Read these; 205102sq.ft; $95067; £305000; 97ct.

1 For object lessons in these Tables, see Arith. No. II.

EIGHTEENTH LESSON.

1. Count 10 ones and tell what they equal; 10 tens; 10 hundreds; 10 thousands; 10 ten thousands; ten hundred thousand, which you may call one million. It is written thus ;—

2. How many and what figures are used to write one million? Write five millions; twenty-five millions; one hundred and twenty-five millions; 125 millions; 255 thou.

3. Read these; 500; 5500; 5005050; 80088000; 38555000; 231449621; 200000001; 70900003.

WINE MEASURE.'

Used to measure all liquids except ale, beer, and milk. Its names are hogsheads, barrels, gallons, quarts, pints, and gills.

4. Read these; 301bb1; 207hhd; 9003gal.; 8017gi.; 2307pt; 20030qt; 3003003gal.; 1901bar.; 27006hhd.

BEER MEASURE.

Used in measuring ale, beer, and milk. Its names are hogsheads, barrels, gallons, quarts, pints, and gills.

5. Read these; 200202bar.; 1503256hhd; 30030gi;

306824qt; 350685bbl; 303038hhd.

For object lessons in these Tables, see Arith. No. IL