SaiBook.us Multiplication

Lesson Example Discussion Quiz: Class Homework

Step-3

Title: Multiplication

Grade: 3-a Lesson: S2-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

01	1					:
30	10	10	10			:

155

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

Step	Description	B	C	D
B1	Carry	1	0	0
M1	Multiplicand	0	3	1
M2	Multiplier	×	0	5
A1	D3 5 × 1 = 5 C3 5 × 3 = 15 B3 5 × 0 + 1 = 1	0 1 1	1 15 5	0 5 5
S1	D3 Bring Down 5 C3 Bring Down 5 B3 Bring Down 1	1	5	5
Sum	Product: 31 × 5 = 155	1	5	5

Step	Type	Explanation	Answer
2	Problem	Find the missing number 18 × ? = 324.
3	Step:	We look for missing number that multiply with 18 to give	324
4	Clue	Product means Multiplication	\$ \times \$
5	Step:	Multiply the number 18 by 18	\$18 \times 18\$
6	Step:	After the multiplication, we get	\$ 324 \$
7	Choice.A	This option is incorrect. If x were 18, the equation would become 18 x 17 = 306, which is not equal to 324	17
8	Choice.B	This option is correct. It is the result of dividing 324 by 18, filling in the missing number to make the equation 18 × 18 = 324	18
9	Choice.C	This option is incorrect. If you multiply 18 by 16, you get 288, not 324	16
10	Choice.D	This option is incorrect because if x were 19, the equation would become 18 x 19 =342, which is much larger than 324	19
11		Answer	B
12	SumUp	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Find the missing number 18 × ? = 324.

Step:

We look for missing number that multiply with 18 to give

324

Clue

Product means Multiplication

\$ \times \$

Step:

Multiply the number 18 by 18

\$18 \times 18\$

Step:

After the multiplication, we get

\$ 324 \$

Choice.A

This option is incorrect. If x were 18, the equation would become 18 x 17 = 306, which is not equal to 324

Choice.B

This option is correct. It is the result of dividing 324 by 18, filling in the missing number to make the equation 18 × 18 = 324

Choice.C

This option is incorrect. If you multiply 18 by 16, you get 288, not 324

Choice.D

This option is incorrect because if x were 19, the equation would become 18 x 19 =342, which is much larger than 324

Answer

SumUp

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

Discussion: Step1 Step2 Step3 Step4 Step5