Lesson Topics Discussion Quiz: Class Homework |
Steps-2 |
Title: Compare fraction numbers |
Grade 4+ Lesson s1-l3 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Quiz: Discussion Step
| Id | Type | Name | Note |
|---|---|---|---|
1 |
Problem |
Identify the small fraction number given below: |
|
2 |
Step |
The given fraction numbers are |
\$(23)/(19), (17)/(21), (31)/(15)\$ |
3 |
Hint |
First, we can convert fractions to have a common denominator. |
|
4 |
Step |
The least common multiple of 19, 21 and 15 is: |
3995 |
5 |
Step |
For \$ (23)/(19) \$ multiply both the numerator and denominator by 210 |
\$ (23 \times 210) / (19 \times 210) = (4830) / (3995) \$ |
6 |
Step |
For \$ (17)/(21) \$ multiply both the numerator and denominator by 190 |
\$ (17 \times 190) / (21 \times 190) = (3230) / (3995) \$ |
7 |
Step |
For \$ (31)/(15) \$ multiply both the numerator and denominator by 267 |
\$ (31 \times 267) / (15 \times 267) = (8277) / (3995) \$ |
8 |
Hint |
The fractions have the same denominator, so you can compare the numerators. The fraction with the larger numerator is the smaller fraction. |
|
9 |
Clue |
Among the fractions \$(4830)/(3995), (3230)/(3995)\$, and \$(8277)/(3995)\$, \$(3230)/(3995)\$ has the smallest numerator, making it the smallest fraction. |
|
10 |
Step |
You can also convert them to decimals \$ (4830)/(3995)\$ is approximately |
1.209 |
11 |
Step |
And also \$(3230)/(3995)\$ is approximately |
0.808 |
12 |
Step |
And also \$(8277)/(3995) \$ is approximately |
2.071 |
13 |
Step |
So, the smallest fraction among \$ (23)/(19), (17)/(21)\$, and \$(31)/(15)\$ is |
\$ (3230)/(3995)\$ |
14 |
Solution |
Therefore, the smallest fraction number is \$(17)/(21)\$. |
|
15 |
Sumup |
Please summarize steps |
|
Choices |
|||
16 |
Choice-A |
This is not the smallest fraction; it has a value of approximately 1.21 |
Wrong \$(23)/(19)\$ |
17 |
Choice-B |
This is not the smallest fraction; it has a value of approximately 2.07 |
Wrong \$(31)/(15)\$ |
18 |
Choice-C |
This is the smallest fraction; it has a value of approximately 0.80 |
Correct \$(17)/(21)\$ |
19 |
Choice-D |
This is incorrect because the smallest fraction is \$(17)/(21)\$ |
Wrong All the above |
20 |
Step |
Option |
C |
21 |
Sumup |
Please summarize choices |
|
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