Lesson Example Discussion Quiz: Class Homework |
Step-4 |
Title: Decimal Division |
Grade: 4-a Lesson: S2-L8 |
Explanation: Let us verify the answer here with the steps. |
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Kevin finished the 520.24 km race in 4 hrs. How many kilometers did he run in an hour? |
|
2 |
Clue |
An hour implies dividing |
Division |
3 |
Hint |
Operator used : |
/ |
4 |
Step |
Number of kilometers |
520.24 km |
5 |
Step |
Amount of time Kelvin took to finish the race |
4 hrs |
6 |
Step |
Number of kilometers ran by Kelvin in one hour |
520.24 km / 4 hrs |
7 |
Step |
On Simplification |
520.24 / 4 |
8 |
Step |
Therefore, the number of kilometers ran by Kelvin in one hour |
130.06 km/hr |
9 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
10 |
Choice.A |
If Kevin ran 140.08 km per hour, then the total distance for 4 hours would be: 4×140.08=560.32 Since 560.32 km is not equal to 520.24 km, Option A is incorrect |
140.08 |
11 |
Choice.B |
The calculation shows that Kevin ran 130.06 kilometers per hour, which corresponds to Option B |
130.06 |
12 |
Choice.C |
If Kevin ran 120.89 km per hour, then the total distance for 4 hours would be: 4×120.89=483.56 Since 483.56 km is not equal to 520.24 km, Option C is incorrect |
120.89 |
13 |
Choice.D |
If Kevin ran 160.06 km per hour, then the total distance for 4 hours would be: 4×160.06=640.24 Since 640.24 km is not equal to 520.24 km, Option D is incorrect |
160.06 |
14 |
Answer |
Option |
B |
15 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
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