Adding 1-To-2-Digit Numbers With Sums Through 99 With Regrouping

8/2/2019 Adding 1-To-2-Digit Numbers With Sums Through 99 With Regrouping

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Adding 1-to-2-digit Numbers with Sums through 99 with Regrouping

I. Learning Objectives

Cognitive: Add 1 to 2 numbers with sums through 99 with regrouping

Psychomotor: Group sticks/other countersin the ones and in the tens place

Affective: Follow directions given by the teacher and give attention to details whileteacher shows the steps of addition with regrouping

II. Learning Content

Skill: Adding 1 to 2 digit numbers with sums through 99 with regrouping

Reference: BEC/PELC - I B. 3.2

Materials: Bundled to loose Popsicle sticks, place value chart, flash cards, magicslate or show-me-boards

Value: Attentiveness

III. Learning Experiences

A. Preparatory Activities

1. Drill

Post the following numbers on the place value chart:

Tens Ones2536758994

2. Review

Pupils add 1 to 2 digit numbers with sum through 99 without regrouping. Using their magic slates or show-me-boards.


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63 33 45 73 64+ 6 +44 +23 + 15 + 24

3. MotivationShow the picture of a fruit stand.

Do you eat fruits? Why? Where do you buy them? Look at Lola's fruit stand. What fruitsdo yu see?

B. Developmental Activities

1. Presentation

a. Here is the list of the number of fruits in Lola's fruit stand.

28 Oranges27 Mangoes7 Watermelons36 Apples43 Banana

How many apples are there if Lina will add 7 more?Put on the board the following cutouts to represent the number.


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What is the sum of numbers in the ones place? (13)How many tens and ones are there in 13?What number was left in the ones place? (3)Where do we regroup 10 in 13? (on thhe ten places)What do you call that way of putting tens from the ones place? (Regrouping)

After regrouping the ten to the tens place, What should we do next? (add the tens).How many mangoes and watermelons are there in all? (43)

b. Now, look at the list again.How many bananas are there? Oranges?Represent the number using the cut outs.

What is the sum of numbers in the ones place?How many tens and ones are there in 11?What was left in the ones place? (1)Where do we regroup 10 in 11? (in the tens place)

How many bananas and oranges are there in all?Let us try short way of adding numbers with regrouping.

Add the ones Regroup to tens Add the tens

(Note: Emphasize that in adding 1 to 2 numbers with regrouping, add first the ones, thenregroup ten to the tens place, then add the tens).

c. Call 5 pupils to go to the board. Have them add an addition sentence simultaneously. Thefirst one to find the sum correctly wins the game. Continue until all the pupils had

participated.

(Note: Teacher checks if the pupils follow the correct step in adding with regrouping.)


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2. Fixing Skills/Practice

Pupils find the sum of addition sentences using show-me-boards.

a. 36 b. 47 c. 65 d. 58 e. 74

+ 6 + 3 +18 + 26 + 183. Generalization

How do we add 1 to 2 numbers with regrouping?- We add first the ones, regroup if necessary. Group tens with other tens then add the

tens to get the sum.

C. Application

Pass it on!Call 2 groups pf pupils with 6 members to go forward. Provide each group with show-me-

board. Dictate the addition sentence. Pupil will write the number sentence then pass it on tothe next pupil to find the sum. Continue until they have answered the last number sentence.

1. 36 2. 45 3. 74 + 6 + 35 +29

*Valuing: Attentiveness to details while teacher gives direction and showing examples. Ask:Why did we give our answer correctly? (Because we listened carefully. We were attentive.)

IV. Evaluation

A. Find the sum.

46 51 85 29 37+ 4 + 9 + 5 + 2 + 4

B. Find the sum.

25 36 47 48 59+ 15 + 26 + 38 + 49 + 29

C. Write the numbers in column, then add.

1) 16, 572) 63, 293) 29, 484) 52, 195) 37, 38


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V. Assignment

Solve and write the answer.

25 girls

16 boysHow many pupils are there? _____

17 mangoes38 guavasHow many fruits are there?_____

43 marbles18 topsHow many toys are there?_____

Documents

Adding 1-To-2-Digit Numbers With Sums Through 99 With Regrouping