SaiBook.us Multiplication

Lesson Example Discussion Quiz: Class Homework

Step-2

Title: Multiplication

Grade: 4-a Lesson: S1-L4

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

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

05	1	1	1	1	1	:
10	10					:

255

05	1	1	1	1	1	:
50	10	10	10	10	10	:
200	₁₀₀	₁₀₀				:

Step	Description	B	C	D
B1	Carry	1	10	0
M1	Multiplicand	0	1	7
M2	Multiplier	×	1	5
A1	D3 15 × 7 = 105 C3 15 × 1 + 10 = 25 B3 15 × 0 + 2 = 2	0 02 1	1 15 10	10 105 5
S1	D3 Bring Down 5 C3 Bring Down 5 B3 Bring Down 2	2	5	5
Sum	Product: 17 × 15 = 255	2	5	5

Step	Type	Explanation	Answer
2	Problem	Multiply 42 by 21.
3	Clue	Product means Multiplication	\$ \times \$
4	Step:	Multiply the number 42 by 21	\$42 \times 21\$
5	Step:	After the multiplication, we get	\$ 882 \$
6	Choice.A	This is incorrect, as it is not the correct product of 42 and 21	682
7	Choice.B	This is incorrect, as it is not the correct product of 42 and 21	782
8	Choice.C	This is the correct answer, as it accurately represents the product of 42 and 21	882
9	Choice.D	This is incorrect, as it is not the correct product of 42 and 21	982
10		Answer	C
11	SumUp	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Multiply 42 by 21.

Clue

Product means Multiplication

\$ \times \$

Step:

Multiply the number 42 by 21

\$42 \times 21\$

Step:

After the multiplication, we get

\$ 882 \$

Choice.A

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

682

Choice.B

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

782

Choice.C

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

882

Choice.D

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

982

Answer

SumUp

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

Discussion: Step1 Step2 Step3 Step4 Step5