SaiBook.us Multiplication

Lesson Example Discussion Quiz: Class Homework

Step-1

Title: Multiplication

Grade: 3-a Lesson: S4-L8

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.

Lesson Steps

Step

Value

Image

02	1	1				:
20	10	10				:

09	1	1	1	1	1	:	1	1	1	1
10	10					:

418

08	1	1	1	1	1	:	1	1	1
10	10					:
400	₁₀₀	₁₀₀	₁₀₀	₁₀₀		:

Step	Description	B	C	D
B1	Carry	3	3	0
M1	Multiplicand	0	2	2
M2	Multiplier	×	1	9
A1	D3 19 × 2 = 38 C3 19 × 2 + 3 = 41 B3 19 × 0 + 3 = 3	0 4 4	4 38 3	3 38 8
S1	D3 Bring Down 8 C3 Bring Down 1 B3 Bring Down 4	4	1	8
Sum	Product: 22 × 19 = 418	4	1	8

Step	Type	Explanation	Answer
1	Problem	By multiplying which factors the result will be 1144.
2	Step:	We look for pairs of numbers that multiply together to give	1144
3	Clue	Product means Multiplication	\$ \times \$
4	Hint	Please check each option number one by one.
5	Step:	The pair that is commonly recognized is	\$143 \ times 8\$
6	Step:	After the Multiplication, we get	\$ 1144 \$
7	SumUp	Can you summarize what you’ve understood in the above steps?
8	Choice.A	This option results in 1144, not 1278, So this option is incorrect	142 x 9
9	Choice.B	The product of these factors is 143 × 8 = 1144, which matches the desired result. Hence, this is the correct answer	143 x 8
10	Choice.C	The product of these factors is 142 × 8 = 1136, which is not equal to 1144. Thus, option C is incorrect	142 x 8
11	Choice.D	143 × 9 = 1287 This option results in 1144, not 1287. So it’s incorrect	143 x 9
12		Answer	B
13	SumUp	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

By multiplying which factors the result will be 1144.

Step:

We look for pairs of numbers that multiply together to give

1144

Clue

Product means Multiplication

\$ \times \$

Hint

Please check each option number one by one.

Step:

The pair that is commonly recognized is

\$143 \ times 8\$

Step:

After the Multiplication, we get

\$ 1144 \$

SumUp

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

Choice.A

This option results in 1144, not 1278, So this option is incorrect

142 x 9

Choice.B

The product of these factors is 143 × 8 = 1144, which matches the desired result. Hence, this is the correct answer

143 x 8

Choice.C

The product of these factors is 142 × 8 = 1136, which is not equal to 1144. Thus, option C is incorrect

142 x 8

Choice.D

143 × 9 = 1287 This option results in 1144, not 1287. So it’s incorrect

143 x 9

Answer

SumUp

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