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Lesson Example Discussion Quiz: Class Homework

Step-3

Title: Multiplication

Grade: 4-a Lesson: S2-L3

Explanation: Hello Students, time to practice and review the steps. Let us take next 2-5 minutes to solve the steps for the problems. This is a good exercise to check your understanding of the concepts.Second student to identify and review important steps.Focus on understanding the concepts and application to solving problems step by step.

Discussion: Step1 Step2 Step3 Step4 Step5

Lesson Steps

Step

Value

Image

1

14

04

1

1

1

1

:

10

10

:

2

28

08

1

1

1

1

1

:

1

1

1

20

10

10

:

3

392

02

1

1

:

90

10

10

10

10

10

:

10

10

10

10

300

100

100

100

:
Step Description A B C D

B1

Carry

2

11

0

M1

Multiplicand

0

1

4

M2

Multiplier

×

2

8

A1

D3 28 × 4 = 112 C3 28 × 1 + 11 = 39 B3 28 × 0 + 3 = 3

0 03 2

2 28 11

11 112 2

S1

D3 Bring Down 2 C3 Bring Down 9 B3 Bring Down 3

3

9

2

Sum

Product: 14 × 28 = 392

3

9

2
Step Type Explanation Answer

2

Problem

Multiply 52 by 21.

3

Clue

Product means Multiplication

\$ \times \$

4

Step:

Multiply the number 52 by 21

\$52 \times 21\$

5

Step:

After the multiplication, we get

\$ 1092 \$

6

Choice.A

The product of 52 and 21 is 1092, not 1082. Therefore, option A is incorrect

1082

7

Choice.B

The product of 52 and 21 is indeed 1092, so option B is correct

1092

8

Choice.C

The product of 52 and 21 is 1092, not 1072. Therefore, option C is incorrect

1072

9

Choice.D

The product of 52 and 21 is 1092, not 1062. Therefore, option D is incorrect

1062

10

Answer

Option

B

11

SumUp

Can you summarize what you’ve understood in the above steps?

Discussion: Step1 Step2 Step3 Step4 Step5

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