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Lesson Table Topics Discussion Quiz: Class Homework

Steps-2

Title: Multiplication

Grade 4+ Lesson s1-l4

Explanation: Hello Students, time to practice and review the steps for the problem.

Quiz: Discussion Step

Discussion: Steps1 Steps2 Steps3 Steps4 Steps5

sbMath-row-a-ones-image5 = {sbMath-row-a-ones-image5}

Step

Value

Image

1

42
Factor

02

1

1

:

40

10

10

10

10

:

2

21
Factor

02

1

1

:

20

10

10

:

3

882
Product

02

1

1

:

80

10

10

10

10

10

:

10

10

10

800

100

100

100

100

100

:

100

100

100
Step Description A B C D

B1

Carry

8

4

2

M1

Multiplicand

0

4

2

M2

Multiplier

×

2

1

A1

D3 21 × 2 = 42 C3 21 × 4 + 4 = 88 B3 21 × 0 + 8 = 8

0 8

8 84 4

4 42 2

S1

D3 Bring Down 2 C3 Bring Down 8 B3 Bring Down 8

8

8

2

Sum

Product: 42 x 21 = 882

8

8

2
Id Type Name Note

1

Problem

Calculate the product of 42 × 21.

2

Step

Product means Multiplication.
\$\times\$

3

Step

Multiply the number 42 with 21

42 × 21

4

Step

After the multiplication and we get

882

5

Sumup

Please summarize steps

Choices

6

Choice-A

This is incorrect and as it is not the correct product of 42 and 21

Wrong 682

7

Choice-B

This is incorrect and as it is not the correct product of 42 and 21

Wrong 782

8

Choice-C

This is the correct answer and as it accurately represents the product of 42 and 21

Correct 882

9

Choice-D

This is incorrect and as it is not the correct product of 42 and 21

Wrong 982

10

Answer

Option

C

11

Sumup

Please summarize choices

Discussion: Steps1 Steps2 Steps3 Steps4 Steps5

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