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Lesson Topics Discussion Quiz: Class Homework

Steps-4

Title: Multiplication

Grade 4+ Lesson s3-l8

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-image100 = {sbMath-row-a-ones-image100}

Step

Value

Image

1

198
Factor

08

1

1

1

1

1

:

1

1

1

90

10

10

10

10

10

:

10

10

10

10

100

100

:

2

10
Factor

10

10

:

3

1980
Product

80

10

10

10

10

10

:

10

10

10

900

100

100

100

100

100

:

100

100

100

100

1000

1000

:
Step Description A B C D

B1

Carry

9

8

M1

Multiplicand

1

9

8

M2

Multiplier

×

1

0

A1

D3 10 × 8 = 80 C3 10 × 9 + 8 = 98 B3 10 × 1 + 9 = 19

10 9

9 90 8

8 80 0

S1

D3 Bring Down 19 C3 Bring Down 8 B3 Bring Down 0

19

8

0

Sum

Product: 198 x 10 = 1980

19

8

0
Id Type Name Note

1

Problem

What is the product if the multiplicand is 198 and the multiplier is 10?

2

Clue

Product means Multiplication
\$\times\$

3

Step

Multiply the number 198 by 10

\$198 times 10\$

4

Step

After the multiplication, we get

1,980

5

Sumup

Please summarize steps

Choices

6

Choice-A

198 multiplied by 10 does not give 1908, so this option is wrong

Wrong 1908

7

Choice-B

1890 is not the product of 198 and 10, so this option is wrong

Wrong 1890

8

Choice-C

1990 is close, but it is not equal to 1980, so this option is wrong

Wrong 1990

9

Choice-D

198 multiplied by 10 is exactly 1980, so this option is correct

Correct 1980

10

Answer

Option

D

11

Sumup

Please summarize choices

Discussion: Steps1 Steps2 Steps3 Steps4 Steps5

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