Lesson Example Discussion Quiz: Class Homework |
Step-4 |
Title: Decimal Division |
Grade: 4-a Lesson: S2-L7 |
Explanation: Let us verify the answer here with the steps. |
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Bob packed 276 cardboard frames in 331.2 minutes. How much time did he take to pack each cardboard frame? |
|
2 |
Clue |
Each implies dividing |
Division |
3 |
Hint |
Operator used : Division |
÷ |
4 |
Step |
Number of cardboard frames |
276 |
5 |
Step |
Time taken to pack 276 frames |
331.2 minues |
6 |
Step |
Time taken to pack each cardboard frame |
331.2 minutes ÷ 276 frames |
7 |
Step |
= |
\$1.2\$ minutes |
8 |
Step |
Total time taken to pack each card board |
1.2 minutes |
9 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
10 |
Choice.A |
If it took 1 minute to pack each frame, then the total time for 276 frames would be: 276×1=276 Since 276 is not equal to 331.2, Option A is incorrect |
1 |
11 |
Choice.B |
If it took 1.9 minutes to pack each frame, then the total time for 276 frames would be: 276×1.9=524.4 Since 524.4 is not equal to 331.2, Option B is incorrect |
1.9 |
12 |
Choice.C |
If it took 1.3 minutes to pack each frame, then the total time for 276 frames would be: 276×1.3=358.8 Since 358.8 is not equal to 331.2, Option C is incorrect |
1.3 |
13 |
Choice.D |
The calculation shows that the time taken to pack each cardboard frame is approximately 1.2 minutes, which corresponds to Option D |
1.2 |
14 |
Answer |
Option |
D |
15 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
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