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Lesson Topics Discussion Quiz: Class Homework

Steps-3

Title: Multiplication

Grade 4+ Lesson s2-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

55
Factor

05

1

1

1

1

1

:

50

10

10

10

10

10

:

2

21
Factor

01

1

:

20

10

10

:

3

1155
Product

05

1

1

1

1

1

:

50

10

10

10

10

10

:

100

100

:

1000

1000

:
Step Description A B C D

B1

Carry

11

10

M1

Multiplicand

0

5

5

M2

Multiplier

×

2

1

A1

D3 21 × 5 = 105 C3 21 × 5 + 10 = 115 B3 21 × 0 + 11 = 11

00 11

11 105 10

10 105 5

S1

D3 Bring Down 5 C3 Bring Down 5 B3 Bring Down 11

11

5

5

Sum

Product: 55 x 21 = 1155

11

5

5
Id Type Name Note

1

Problem

Calculate the product of 55 multiplied by 21

2

Clue

Product means Multiplication
\$\times\$

3

Step

Multiply the number 55 by 21

\$55 times 21\$

4

Step

After the multiplication and we get

1155

5

Sumup

Please summarize steps

Choices

6

Choice-A

This is incorrect as it is not the correct product of 55 and 21

Wrong 1145

7

Choice-B

This is the correct answer as it accurately represents the product of 55 and 21

Correct 1155

8

Choice-C

This is incorrect as it is not the correct product for 55 and 21

Wrong 1165

9

Choice-D

This is incorrect as it is not the correct product of 55 and 21

Wrong 1175

10

Answer

Option

B

11

Sumup

Please summarize choices

Discussion: Steps1 Steps2 Steps3 Steps4 Steps5

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