SaiBook.us Decimals

Lesson Example Discussion Quiz: Class Homework

Step-3

Title: Decimal Addition

Grade: 4-a Lesson: S1-L2

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	Type	Explanation	Answer
1	Problem	The give Problem is	\$28 , 15.7\$
2	Clue	Operator used for addition	+
3	Step	Add the numbers	\$28 + 15.7\$
4	Step	After the addition or simplification we get	\$ 43.7 \$
5	Answer	Option	C
6	Sumup	Can you summarize what you’ve understood in the above steps?
1	Choice.A	Incorrect: Adding 20 (tens digit of 29) and 16 (whole number of 16.8) wouldn’t give 48. We would get 36, so the tens digit should be 3, not 4.	46.8
2	Choice.B	Incorrect: Adding 9 (ones digit of 29) and 8 (tenths digit of 16.8) doesn’t give 3. It should be 17, with the 1 carrying over to the tens digit. Therefore, the ones digit should be 6, not 3.	44.8
3	Choice.C	Correct: This is the actual stem of the sum. Adding 29 and 16.8 results in 46.9. Ignoring the decimal, the tens and ones digits are 46.	43.7
4	Choice.D	Incorrect: Both the tens and ones digits are wrong. As explained in B, the ones digit should be 6, and the tens digit should be 4 (adding 20 from 29 and 20 from 16.8).	45.7
5	Sumup	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

The give Problem is

\$28 , 15.7\$

Clue

Operator used for addition

Step

Add the numbers

\$28 + 15.7\$

Step

After the addition or simplification we get

\$ 43.7 \$

Answer

Option

Sumup

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

Choice.A

Incorrect: Adding 20 (tens digit of 29) and 16 (whole number of 16.8) wouldn’t give 48. We would get 36, so the tens digit should be 3, not 4.

46.8

Choice.B

Incorrect: Adding 9 (ones digit of 29) and 8 (tenths digit of 16.8) doesn’t give 3. It should be 17, with the 1 carrying over to the tens digit. Therefore, the ones digit should be 6, not 3.

44.8

Choice.C

Correct: This is the actual stem of the sum. Adding 29 and 16.8 results in 46.9. Ignoring the decimal, the tens and ones digits are 46.

43.7

Choice.D

Incorrect: Both the tens and ones digits are wrong. As explained in B, the ones digit should be 6, and the tens digit should be 4 (adding 20 from 29 and 20 from 16.8).

45.7

Sumup

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

Discussion: Step1 Step2 Step3 Step4 Step5