Mr. Cruz has 782 square meters of land planted with corn and 575 square meters planted with palay. The problem asks how many more square meters were planted with palay than corn. To solve this, we subtract 575 from 782. Doing this gives us an answer of around 200 square meters more planted with palay.

2. 4 753
84 387
59 367 38 732
3 575 4 385
547 203
47 259
1 543

3. Hundreds Thousands
1) 253 2) 3 437
3) 125 4) 6 053
5) 478 6) 4 857
7) 659 8) 8 210
9) 304 10) 7 489

4. Mr. Cruz has 782 square meters
of land planted with corn and
575 square meters planted with
palay. About how many square
meters more of land were
planted with palay than with
corn?

5.  What is asked in the problem?
 What operation are we going to use?
 What will be the number sentence for the
problem?
Execute our plan
Around 200 square meters of land were planted
to palay than corn
782 800
-575 -600

6. Check your work
Exact Difference Estimated Difference
782 800
- 575_ - 600
207 200
207 I close to 200

7. Guided Practice
4 615
- 3 243
536
- 275
8 937
- 4 352
6 836
- 2 595
483
- 124
882
- 416
6 247
- 3 281
7 086
-2 540
748
-334
296
- 154

8. Remember:
To estimate the difference:
a. Round the minuend and the subtrahend
to their greatest place value.
b. Subtract the rounded numbers.

9. Complete the puzzle boxes by estimating. The
answer in the bottom right corner of each box
will be the same when subtracting across or
down.
1 287 891
888 641

10. Estimate the difference by rounding the numbers to its
highest place value then subtract. Write the answer in
your notebook.
1) 643  2) 846 
-448  - 551 
3) 558  4) 452 
- 99  -125 
5) 758 
-174 

11. 6) 8 435  7) 9 071 
- 2 526  - 2 052 
8) 4 892  9) 8 465 
- 1 261  - 3 259
10) 4 936 
- 2 143 

12. Assignment:
Write a good estimate after each problem, then
solve.
1. Mr. Reyes wanted to sell 302 tickets for a
cultural show. He sold 191 tickets. About how
many more tickets should he sell?
Estimate by rounding to the nearest
hundreds
Answer:

13. 2. There are 8 936 books in Manuel L. Quezon
Elementary School. Manuel Roxas Elementary
School has 7 642 books in its library. How
many more books does Manuel L. Quezon
Elementary School have than Manuel Roxas
Elementary School?
Estimate by rounding to the nearest
thousands:
Answer: