SaiBook.us Decimals

Lesson Example Discussion Quiz: Class Homework

Step-4

Title: Decimal Addition

Grade: 5-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	Type	Explanation	Answer
1	Problem	Addition of Decimals 25.0+12+41.2
2	Step	The given addition is	25.0+12+41.2
3	Hint	The process is very similar to adding two decimals. Just extend it for the additional numbers.
4	Step	The numbers are first padded with zero. Align the decimals and add each column from right to left.
5	Step	Finally, add decimals like integers and and place the decimal point accordingly.	25.0+12+41.2=78.2
6	Answer	Option	D
7	Sumup	Can you summarize what you’ve understood in the above steps?
8	Choice.A	This option is incorrect because it doesn’t correctly sum the three decimals. Adding the numbers together results in 78.2, not 41.2	41.2
9	Choice.B	This option is incorrect because it doesn’t correctly sum the three decimals. Adding the numbers together results in 78.2, not 55.2	55.2
10	Choice.C	This option is incorrect because it doesn’t correctly sum the three decimals. Adding the numbers together results in 78.2, not 65.2	65.2
11	Choice.D	This is the correct sum. Adding the numbers together results in 78.2	78.2
12	Sumup	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Addition of Decimals 25.0+12+41.2

Step

The given addition is

25.0+12+41.2

Hint

The process is very similar to adding two decimals. Just extend it for the additional numbers.

Step

The numbers are first padded with zero. Align the decimals and add each column from right to left.

Step

Finally, add decimals like integers and and place the decimal point accordingly.

25.0+12+41.2=78.2

Answer

Option

Sumup

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

Choice.A

This option is incorrect because it doesn’t correctly sum the three decimals. Adding the numbers together results in 78.2, not 41.2

41.2

Choice.B

This option is incorrect because it doesn’t correctly sum the three decimals. Adding the numbers together results in 78.2, not 55.2

55.2

Choice.C

This option is incorrect because it doesn’t correctly sum the three decimals. Adding the numbers together results in 78.2, not 65.2

65.2

Choice.D

This is the correct sum. Adding the numbers together results in 78.2

78.2

Sumup

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

Discussion: Step1 Step2 Step3 Step4 Step5