SUBTRACTION 1. From 83 subtract 35. 838 tens + 3 ones, or 7 tens + 13 ones 35= 48 = 3 tens + 5 ones 4 tens+ 8 ones. Since 5 ones cannot be taken from 3 ones, take 1 ten (= 10 ones) from the 8 tens (leaving 7 tens) and add it to the 3 ones, making 13 ones. 13 ones less 5 ones equal 8 ones. 7 tens (remaining) less 3 tens equal 4 tens. The work may be expressed thus: We think: "5 from 13 leaves 8; 713 83 6. Mary picked 63 quarts of strawberries and sold to her aunt 40 quarts. How many quarts did she have left? 7. John sold 83 quarts of milk in May and 58 quarts in June. How many more quarts did he sell in May than in June? 8. In a school there are 32 girls and 19 boys. How many more girls than boys are there in the school? 9. John has read 91 pages in his reader and Mary has read 76 pages in her reader. How many more pages has John read than Mary? 10. On flag day, Susan counted 93 flags on one street and Ellen 49 flags on another street. How many more flags did Susan count than Ellen? PRACTICAL PROBLEMS 1. Mother paid $.40 for a pound of butter, $.32 for a pound of coffee, and $.09 for a quart of milk. How much did she pay for the three articles? 2. How much money had she left from $.90? 3. Find the cost of a pair of shoes for $3.50, a cap for $.75, and a pair of gloves for $2. 4. Charles bought a quart of ice cream for $.35. How much change did he get from half a dollar? 5. Fanny put the following coins into her bank: a dime, a cent, a nickel, a quarter, and a half dollar. How much money did she put into her bank? 6. A man bought a wagon for $69, and paid $12 to have it painted. How much did the wagon cost? 7. John had a garden. In the spring he paid $.15 for seed. During the summer he sold radishes for which he received in all $.62. How much did he make? 8. A man owed a bill of $45. He paid $27 on account. How much remained to be paid? 9. Lucy and Mary together saved $.90. Mary saved $.43. How much of the money belonged to Lucy? 10. Tom bought a book for $.80, and sold it for $.55. How much did he lose? 11. Find the cost of a knife for $.50, a pen for $.25, and a pencil sharpener for $.08. REVIEW 1. 9+7+6+4+5= ? 8+6+9+8+3=? 2. How many dozen eggs are there in 4 crates, each containing 30 dozen? 3. There are 144 square inches in 1 square foot. How many square inches are there in 2 square feet? 4. How many square inches are there in one half of a square foot? 5. There are 365 days in a year. are there in 2 years? How many days 6. The distance between two cities is 480 miles. How far has a man traveled when he has traveled of the distance? 7. A man picked 80 baskets of peaches. He sold all but 17 baskets. How many baskets of peaches did he sell? 8. How many trees are there in 3 orchards, each containing 27 trees? 9. A milkman sold 165 quarts of milk a week. How many quarts did he sell in 3 weeks? 10. He sold a cow for $48, for which he had paid $70. How much did he lose? 11. There are 60 minutes in an hour. How many minutes are there in 4 hours? 12. Write the Roman number for 27; for 31; for 42. |