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Examples :: Lesson Plans :: Example of Mathematics Lesson Plan:Estimating Sums

Example of Mathematics Lesson Plan:Estimating Sums 1. Objective/s:

Estimate the sum of 3 to 6- digit addends

2. Subject Matter:
1. Estimating Sums
2. Integration: Character Education: Love for reading and care for books

3. References/ Materials:
1. Math handbook,
2. Charts on estimating sums

4. Procedure:
1. Drill
Add the short way
 5396   2735   1620 34278   26512   45967 153106   245893   421352
2. Review:

Round to the nearest:

 Ten Hundred Thousand Ten thousand 12346 12350 12400 12000 10000 47982 82196 51721 38278 92193
3. Presentation:

Some district of Makati received the following number of mathematics books: 1, 10 169; district 11, 11 050 and district 111, 11 120. About how many books were given to these districts?

About how many books were given to these districts?

To estimate the total number of these books, we can round of the numbers to the nearest thousand

10169 = 10000 11050 = 11000 11120 = 11000

About 32 000 Math books were delivered at some schools in Makati

Character Education Integration:

Do you love reading books? What good thins do you get from reading? How should you take care of your books?

4. Practice Exercise:

Estimate the sums of the following:

6210= _________         18933= _________

7928= _________         17173= _________

2768= _________         53143= _________

8210= _________         49621= _________

5. To estimate sums, round off the addends to the nearest 1000's 4 digit numbers, 10 000's for 5 digit numbers, 100 000;s for 6 digit numbers
6. Fixing skills
1. Estimate the sums:
698    2324   4851   16240   210681
210    5785   3203   12685   382450

2. Game:
3. Group seatwork:
4. Distribute 5 slips of paper with written addition combinations of 3 to 6- digit addends to each group. The first two group to post their correct answer (in manila paper )wins.
5. Evaluation:

Estimate the sums of the following:

 521 + 280 6762 + 4245 8320 + 5932 31726 + 70314 123671 + 478530
6. Assignment:

Answer exercises in estimating sums in the Math textbook.