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

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**Objective/s:**Estimate the sum of 3 to 6- digit addends

**Subject Matter:**- Estimating Sums
- Integration: Character Education: Love for reading and care for books
**References/ Materials:**- Math handbook,
- Charts on estimating sums
**Procedure:**- Drill

Add the short way5396 2735

__1620__34278 26512

__45967__153106 245893

__421352__ - Review:
Round to the nearest:

Ten Hundred Thousand Ten thousand 12346 12350 12400 12000 10000 47982 82196 51721 38278 92193 - 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?

- Practice Exercise:
Estimate the sums of the following:

6210= _________ 18933= _________ 7928= _________ 17173= _________ 2768= _________ 53143= _________ 8210= _________ 49621= _________

- 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
- Fixing skills
- Estimate the sums:
698 2324 4851 16240 210681 210 5785 3203 12685 382450

- Game:
- Group seatwork:
- 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.
**Evaluation:**Estimate the sums of the following:

521

__+ 280__6762

__+ 4245__8320

__+ 5932__31726

__+ 70314__123671

__+ 478530__**Assignment:**Answer exercises in estimating sums in the Math textbook.