9-28. Write the four numbers under 1 and 2 a, and add them. Do the same with 1 and 2 b, c, d, and e; then with 3 and 4 a, b, c, d, and e; then with 5 and 6 a, b, c, d, and e; and then with 7 and 8 a, b, c, d, and e. DRILLS IN SUBTRACTION AND ADDITION Subtract rapidly, and test results: Note how many remainders you can find in one minute. Keep a score card for several days and try to beat your own record. 7-21. Write the four numbers under 1 and 2 a, and add them. Do the same with 1 and 2 b, c, d, and e; then with 3 and 4 a, b, c, d, and e; then with 5 and 6 a, b, c, d, and e. ADDITION AND SUBTRACTION 1. In the Central School, there are 398 pupils; in the Garfield School, 1045, and in the Holmes School, 2306. How many pupils are there in the three schools? 2. Mr. Adams's home cost $4370, and Mr. Boyd's cost $3745. Find the difference in the cost of their homes. 3. John lives 5906 feet from his school, and Thomas lives 2194 feet nearer the school than John. How far does Thomas live from the school? 4. Bertha counted the people in four parades. In the first there were 208; in the second, 890; in the third, 1506; and in the fourth, 1781. How many were there in all? 5. In two city schools, boys parade as soldiers. In the first school there are 1790 boys; in the second school 279 boys less than in the first. How many boys are there in the second school? 6. A merchant sold for the fourth of July, 3706 small flags, 1712 larger flags, and 19 flags for flag poles. How many flags did he sell? 7. In counting the steps to school, Joseph took 1370, and Harvey took 940 less than Joseph. How many steps did Harvey take? 8. A street-car conductor collected 103 fares on the first trip, 72 on the second trip, 176 on the third trip, and 39 on the fourth trip. How many fares did he collect? |