Lesson Example Discussion Quiz: Class Homework |
Step-3 |
Title: Decimal Subtraction |
Grade: 4-a Lesson: S2-L3 |
Explanation: Let us verify the answer here with the steps. |
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Jack bought a 159.7-foot rope and Sherly bought a 134.6-foot rope. How much short is Sherly’s rope than Jack’s? |
|
2 |
Clue |
Much implies comparison |
Subtraction |
3 |
Hint |
Operator used : subtraction |
- |
4 |
Step |
Length of rope bought by Jack |
159.7 feet |
5 |
Step |
Length of rope bought by Sherly |
134.6 feet |
6 |
Step |
Difference in length of ropes bought by Jack and Sherly |
159.7 feet - 134.6 feet |
7 |
Step |
= |
25.1 |
8 |
Step |
Therefore, difference in length of ropes bought by Jack and Sherly |
25.1 feet |
9 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
10 |
Choice.A |
This option is incorrect because the calculation 159.7−134.6 does not result in 45.1. It results in 25.1 |
45.1 |
11 |
Choice.B |
This is incorrect because 35.1 is not the difference between 159.7 and 134.6 |
35.1 |
12 |
Choice.C |
This is correct. We have verified that subtracting 134.6 from 159.7 gives us 25.1 |
25.1 |
13 |
Choice.D |
This option is incorrect because the actual difference is 25.1 feet, not 15.1 feet. A difference of 15.1 feet would be smaller than the actual discrepancy |
15.1 |
14 |
Answer |
Option |
C |
15 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
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