LESSON IX. 1. How many balls are 1 ball and 2 balls ? Express the answer on your slates, thus: 1 ball and 2 balls are 3 balls; or, 1 and 2 are 3. 2. How many balls are 2 balls and 2 balls ? Express the answer thus : 2 balls and 2 balls are 4 balls; or, 2 and 2 are 4. 3. How many balls are 3 balls and 2 balls ? Express the answer thus : 3 balls and 2 balls are 5 balls; or, 3 and 2 are 5. 3+2=5. The sign + takes the place of the word and. It is read plus. The sign = takes the place of the word are. It is read equal. Then 1 and 2 are 3, is written 1+2 =3, and read, 1 plus 2 equal 3. 4. Express 2 and 2 are 4, and 3 and 2 are 5, on your slates, using the signs. 5. How many balls are 4 balls and 2 balls? 4+2=? 5+2=? 6+2=? 7+2=? 8+2=? 6. How many are 9 balls and 2 balls? 10+2=? Counting numbers together is called Addition. 7. Form the addition table of twos. 1. How many birds are 1 bird and 3 birds? 3. Harry bought 3 oranges one day, and 3 the next. How many oranges did he buy? 4. How many figs are 4 figs and 3 figs? 5. How many boys are 5 boys and 3 boys? 6. Helen gave a beggar 6 cents, and Mary gave him 3 cents. How many cents did both give him? 7. A man bought 7 loads of hay one week, and 3 the next. How many loads of hay did he buy? 8. How many are 8 and 3? How many are 9 and 3? 9. How many tops are 10 tops and 3 tops? 10. How many bees are 1 bee and 4 bees? 11. How many butterflies are 2 butterflies and 4 butterflies? 12. Mary had 3 cents, and her brother gave her 4 more. How many cents had she then ? 13. A' boy bought 4 pencils one day, and 4 the next. How many pencils did he buy in both days? 14. How many books are 5 books and 4 books? 15. How many are 6 and 4? 7 and 4? 16. If there are 7 boys on one seat and 4 on another, how many boys are there on both seats 17. 8+4=? 9+4=? 10+4=? LESSON XI. more. 1. James had 3 oranges, and bought 4 more. How many had he then? 3+4=? 2. Mary had 4 pencils, and her aunt gave her 2 How many had she then? 3. If there are 9 cows in one field and 3 in another, how many are there in both fields ? 4. John had 4 pennies, and earned 7 pennies. How many had he then? 5. Helen picked 3 roses from one bush and 7 from another. How many roses did she pick from both ? 6. One hen's nest had 3 eggs in it, and another had 5. How many eggs were there in both nests? 7. 3+4=? 4+7=? 4+6=? 8. There are 6 lambs in one field and 2 in another. How many lambs in both fields? 6+2=? 9. 4+2=? 7+3=? 3+5=? 10. A man paid 10 dollars for a coat and 4 dollars for a hat. What did he pay for both ? 11. 9+3=? 3+8-? 8+4=? 12. How many are 10 and 2? 2 and 10? 13. How many are 9 and 2? 2 and 9? 14. How many robins are 5 robins and 3 robins? SLATE EXERCISES. 3 8 6 5 8 9 7 6 2 ? 1 LESSON XII. one How many 1. There is 1 pigeon on one limb and there are 5 pigeons on another. How many are there on both limbs? 1+5=? 2. A man put 2 bushels of wheat in bin and 5 in another. bushels did he put in both bins? 2 +5=? 3. Richard gave 3 cents for a lemon and 5 cents for an orange. How much did he give for both? 3+5=? 4. How many girls are 4 girls and 5 girls ? 8. A girl gave 1 cent for a needle and 6 cents for a spool of thread. How much did she pay for both? 1+6=? 9. A boy gave 2 cents for marbles and 6 cents for a top. How much did he pay for both ? 10. How many lamps are 3 lamps and 6 lamps ? 11. How many are 4 and 6 ? How many are 5 and 6? 12. A man bought 6 bushels of potatoes at one time, and 6 more at another time. How many did he buy at both purchases ? 6+6=? 13. How many lambs are 7 lambs and 6 lambs? |