# Addition of Two Digits Numbers with Exchange or Remaining (Primary 2)

MATHEMATICS

SECOND TERM

WEEK 2

PRIMARY 2

THEME – BASIC OPERATIONS

PREVIOUS LESSON – Second Term Scheme of Work and Plan Lesson Notes for MATHEMATICS Week 1 to Week 12 Primary 2 – Revision

TOPIC – ADDITION OF 2 – DIGITS NUMBERS WITHOUT EXCHANGE OR REMAINING

PERFORMANCE OBJECTIVES

By the end of the lesson, the pupils should have attained the following objectives (cognitive, affective and psychomotor) and should be able to add 2-digit numbers without exchanging or renaming.

ENTRY BEHAVIOUR

INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of:

2. Bean seed

3. Cards, etc.

4. Counters such as sticks, bottle tops.

METHOD OF TEACHING – Choose a suitable and appropriate methods for the lessons.

Note – Irrespective of choosing methods of teaching, always introduce an activities that will arouse pupil’s interest or lead them to the lessons.

REFERENCE MATERIALS

1. Scheme of Work

2. 9 – Years Basic Education Curriculum

3. Course Book

4. All Relevant Material

5. Online Information

CONTENT OF THE LESSON

## LESSON ONE – INTRODUCTION

Pupil’s Activities – Group Numbers in Tens and Units

Sample

A.////////////////////  //

= 10 + 10 + 2

= 2 Tens and 2 Units

= 20 + 2

= 22

B.////////////////////////////////////////  ///////

= 10 + 10 + 10 + 10 + 7

= 4 Tens and 7 Units

= 40 + 7

= 47

Quantitative Reasonings – Write and Read in Tens and Units

1. //////////////////////////////  /////

2. ////////////////////  //

3. //////////////////

Sample

24 = 10 + 10 + 4

4. 45 =

5. 31 =

Teacher’s Activities – Marking and Correction

Pupil’s Activities 2 – Exercises/Take Home

1. 27 = 10 + 10 + (___)

2. (___) = 10 + 10 + 10 + 8

3. 21 = (___) + (___) + 1

4. 17 = 10 + (___)

5. 74 = (___) + (___) + (___) + (___) + (___) + (___) + (___) + (___)

6. (___) = 10 + 10 + 10 + 5

## LESSON TWO – ADDITION OF 2 – DIGIT NUMBERS WITHOUT RENAMING

Teacher’s/Pupil’s Activities 1 – Add 23 + 12

Lead the pupils in the activities below:

23 = 20 + 3    //////////  //////////  ///  2 Tens + 3 Units

12 = 10 + 2   //////////  //   1 Ten + 2 Units

___________

25 = 30 + 5 =  //////////  //////////  //////////  /////  3 Tens + 5 Units

Pupil’s Activities 2 – EXERCISES/ASSIGNMENT

1. 16 + 11

2. 23 + 14

3. 56 + 42

4. 80 + 39

## LESSON THREE – QUANTITATIVE REASONING

As stated in their Quantitative Books or Textbooks

PRESENTATION

To deliver the lesson, the teacher adopts the following steps:

1. To introduce the lesson, the teacher revises the previous lesson. Based on this, he/she asks the pupils some questions;

2. Revises addition to one digit numbers.

3. Guides pupils to solve addition problems of 2 – digit numbers.

Pupil’s Activities – Solves addition of 2 – digit numbers. Provides answers to the given problems.

4. Leads pupils to arrange counters in bundles of tens and write e.g. 35 sticks = 3 bundles of sticks and 5 pieces.

5. Leads pupils to count and say the numbers in the expanded form and be able to write the numerals in that form e.g. 96 = 9 tens + 6 units.

Pupil’s Activities – Count and say the numbers in the in the expanded form and write the numerals.

6. Guides pupils to solve some addition problems on the board.

Pupil’s Activities – Provides answers to the given problems.

7. Guides pupils to mention the number of tens and units in each of the numbers, writes it on the board e.g. 80 + 15 = 80 + 10 + 5 = 95.

Pupil’s Activities – Mention the number of tens and units in each of the numbers on the board.

CONCLUSION

• To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson.

LESSON EVALUATION

Pupils to add given 2-digit numbers without exchanging or renaming.