Understand addition as
combining two groups of objects
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TEACHERGUIDE
LEARNING OBJECTIVE
Understand addition as combining two groups of objects.
LEARNING OUTCOME
At the end of the lesson, pupils should be able to: Add two numbers
with regrouping and without regrouping two 2-digit numbers and
answer at least 4 questions correctly.MAINMENU
Topic: Pupils will learn:
Add two-numbers without regrouping
• Counting altogether one by one
Add two-numberswith regrouping
• Introduction to standard written method
Problem SolvingQuestions
• Identify what the information given, what the question ask for and what operation is needed and how to solve it.MAIN
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ADD TWO-NUMBERS WITHOUT REGROUPING
ADD TWO-NUMBERSWITH REGROUPING
PROBLEM SOLVING
OMA EXERCISES
PROBLEM SOLVINGEXERCISES
1
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3
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5
Add two numbers without regrouping
I have 12 red balls and 20 green balls. How
many balls are there?
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Add two numbers without regroupingHow many balls are there?
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How many balls are there?
Red balls plus green balls
How many red balls are there?
12
How many green balls are there?
20
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Add two numbers without regrouping
How many balls are there?
12 + 20 =
12 plus 20 equals .
There are balls.
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Add two numbers without regrouping
How many balls are there?
12 + 20 =
12 plus 20 equals .
There are balls.
321 23 45
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Add two numbers without regrouping
How many balls are there?
12 + 20 =
12 plus 20 equals .
There are balls.
3232
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Add two numbers without regrouping
How many balls are there?
12 + 20 =
12 plus 20 equals .
There are balls.32
3232
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Add two numbers with regrouping
I have 15 yellow stars and28 green stars.
How many stars are there?
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I have 15 yellow stars and28 green stars.
How many stars are there?
15 + 28 =Tens One
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I have 15 yellow stars and28 green stars.
How many stars are there?
15 + 28 =Tens One
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Therefore,
Tens Ones
15 and 28 makes
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I have 15 yellow stars and28 green stars.
How many stars are there?
1 5 + 2 8
T O
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I have 15 yellow stars and28 green stars.
How many stars are there?
1 5 + 2 8
T O
Add the ones.
5 ones + 8 ones = 13 onesRegroup :
13 ones = 1 ten + 3 ones
Regroup
1 3
4
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I have 15 yellow stars and28 green stars.
How many stars are there?
What is given?
I have 15 yellow stars and
28 green stars.How many stars are
there?What is asked for?
I have 15 yellow stars and
28 green stars.How many stars are
there?
What operation is needed?
Addition
I have 15 yellow stars and
28 green stars.How many stars are
there?
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I have 15 yellow stars and28 green stars.
How many stars are there?
Write the number sentence
15 + 28 = 1 23 45
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15 + 28 =
1 5 + 2 8
T O
Add the ones.
5 ones + 8 ones = 13 onesRegroup :
13 ones = 1 ten + 3 ones
Regroup
1 3
4 15 + 28 = 43
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QUESTION
+ =
ANSWER
RESET
YourMark
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35 + 54 =
Mark
Mark
Mark
44 + 26 = 55 + 28 =
RESET
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Your Total Mark
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QUESTION
Right answer
RESET
I have yellow stars
and green stars. How
many stars are there?
Your Answer
1 23 45
YourMark
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