SaiBook.us Multiplication

Lesson Example Discussion Quiz: Class Homework

Step-4

Title: Multiplication

Grade: 4-a Lesson: S1-L7

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

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

07	1	1	1	1	1	:	1	1
10	10					:

323

03	1	1	1	:
20	10	10		:
300	₁₀₀	₁₀₀	₁₀₀	:

Step	Description	B	C	D
B1	Carry	1	15	0
M1	Multiplicand	0	1	9
M2	Multiplier	×	1	7
A1	D3 17 × 9 = 153 C3 17 × 1 + 15 = 32 B3 17 × 0 + 3 = 3	0 03 1	1 17 15	15 153 3
S1	D3 Bring Down 3 C3 Bring Down 2 B3 Bring Down 3	3	2	3
Sum	Product: 19 × 17 = 323	3	2	3

Step	Type	Explanation	Answer
2	Problem	Find the product of 45 multiplied by 28.
3	Clue	Product means Multiplication	\$ \times \$
4	Step:	Multiply the number 45 by 28	\$45 \times 28\$
5	Step:	After the Multiplication, we get	\$1260\$
6	Choice.A	The product of 45 and 28 is 1260, not 1290. Therefore, option A is incorrect	1290
7	Choice.B	The product of 45 and 28 is 1260, not 1280. Therefore, option B is incorrect	1280
8	Choice.C	The product of 45 and 28 is 1260, not 1290. Therefore, option C is incorrect	1290
9	Choice.D	The product of 45 and 28 is indeed 1260, so option D is correct	1260
10		Answer	D
11	SumUp	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Find the product of 45 multiplied by 28.

Clue

Product means Multiplication

\$ \times \$

Step:

Multiply the number 45 by 28

\$45 \times 28\$

Step:

After the Multiplication, we get

\$1260\$

Choice.A

The product of 45 and 28 is 1260, not 1290. Therefore, option A is incorrect

1290

Choice.B

The product of 45 and 28 is 1260, not 1280. Therefore, option B is incorrect

1280

Choice.C

The product of 45 and 28 is 1260, not 1290. Therefore, option C is incorrect

1290

Choice.D

The product of 45 and 28 is indeed 1260, so option D is correct

1260

Answer

SumUp

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

Discussion: Step1 Step2 Step3 Step4 Step5