2. to develop the skills and knowledge in solving word problems;

4. Write 3 in the ones column and bring the 1 ten to

5. the tens column.

6. Add the tens: 1 +7 +2 = 12 tens = 1 hundred + 2

7. tens.

8. Write 2 under the tens column and bring the 1

9. hundred to the hundreds column.

10. Add the hundreds: 1 + 8 + 6 = 15 hundreds = 1

12. 1 ten + 8 tens + 5 tens = 14 tens = 1 hundred + 4 tens.

13. 1 hundred + 9 hundreds +7 hundreds = 17 hundreds = 1

14. thousand + 7 hundreds.

16. 1 ten + 2 tens + 5 tens = 8 tens

17. 3 hundred + 4 hundreds=7 hundreds