Lesson Example Discussion Quiz: Class Homework |
Step-5 |
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. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
The give Problem is |
\$30 , 17.9\$ |
2 |
Clue |
Operator used for addition |
+ |
3 |
Step |
Add the numbers |
\$30 + 17.9\$ |
4 |
Step |
After the addition or simplification we get |
\$ 47.9 \$ |
5 |
Answer |
Option |
B |
6 |
Sumup |
Can you summarize what you’ve understood in the above steps? |
|
1 |
Choice.A |
Incorrect: Adding 30 (tens digit of 30) and 17 (whole number of 17.9) wouldn’t give 48. We would get 47, so the tens digit should be 4, not 8. |
48.6 |
2 |
Choice.B |
Correct: This is the actual stem of the sum. Adding 30 and 17.9 results in 47.9. Ignoring the decimal, the tens and ones digits are 47. |
47.9 |
3 |
Choice.C |
Incorrect: Both the tens and ones digits are wrong. Adding 0 (ones digit of 30) and 9 (tenths digit of 17.9) doesn’t give 7. It should be 9, with no carryover. Adding 30 (tens digit of 30) and 10 (tens digit of 17) makes 40, not 45. |
45.7 |
4 |
Choice.D |
Incorrect: While the tens digit is correct, the ones digit is wrong. Adding 0 (ones digit of 30) and 9 (tenths digit of 17.9) gives 9, not 5. |
46.5 |
5 |
Sumup |
Can you summarize what you’ve understood in the above steps? |
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