ADDITION Add from left to right and from right to left: 1. 8, 4, 6, 5, 8, 7, 4, 9, 3, 6, 4, 8, 6. 2. 24, 16, 13, 42, 19, 5, 9, 6, 7, 5, 4, 9. 3. 18, 23, 90, 64, 75, 6, 6, 9, 15, 19, 10. Read and solve: 4. 2465+3642 + 4612+5534 + 6342 =? 5. 4756+3254 +4321 +4132+3536=? 6. 4234+3512+2435+ 1543+2453=? 7. 5243+2453 +3215 +4123+ 4231=? 8. 6314+1355 + 2652 + 1623 +3245 = ? 9. A carpenter had 23 men and hired 13 more. How many had he then? 10. Mr. Jones deposited $ 123 in a bank on Monday; $232 on Tuesday; and $321 on Wednesday. How much did he deposit in the three days? 11. A ship sailed 223 miles the first day, 320 miles the second day, and 231 miles the third day. How many miles did it sail? 12. A farmer raised 230 bushels of wheat, 122 bushels of corn, 112 bushels of oats, and 323 bushels of rye. How many bushels of grain did he raise? 13. Mrs. Foster bought a bedroom set of furniture for $125, a piano for $350, curtains for $ 52, pictures for $128, and a rug for $23. How much did they all cost? DRILL IN ADDITION Add rapidly and check, finding 3 answers in 1 minute. 4. Give sums at sight, thus: 32+40=72; 72+5=77. 227 2 hundreds + 2 tens + 7 ones. = Take 1 hundred from 8 hundreds; this leaves 7 hundreds. 1 hundred equals 10 tens. Take 1 ten from 10 tens; this leaves 9 tens. 1 ten and 3 ones are 13 ones. 803 then is equal to 7 hundreds, 9 13 ones 6 ones = 7 ones; Subtract and test: tens, and 13 ones. 7 tens = 2 tens; 7 Answer, 227. 6. Subtract 187 from 9234; then take 187 from each successive remainder, until the final remainder is 7364. |