Lesson Example Discussion Quiz: Class Homework |
Step-2 |
Title: Large numbers |
Grade: 4-a Lesson: S1-L2 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
Step | Type | Explanation | Answer |
---|---|---|---|
1 |
Problem |
Identify the large fraction number given below |
|
2 |
Step |
The given fraction numbers are |
\$17/12, 5/13 , 19/21\$ |
3 |
Step |
First, we can convert fractions to have a common denominator. |
|
4 |
Step |
The least common multiple of 12,13 and 21 is |
546 |
5 |
Step |
For \$ 17/12\$ multiply both the numerator and denominator by 45 |
\$ (17 * 45) / (12 * 45) = 765 / 546 \$ |
6 |
Step |
For \$ 5/13 \$ multiply both the numerator and denominator by 42 |
\$ (5 * 42) / (13 * 42) = 210 / 546 \$ |
7 |
Step |
For \$ 19/21 \$ multiply both the numerator and denominator by 26 |
\$(19 * 26) / (21 * 26) = 494 / 546 \$ |
8 |
Step |
The fractions have the same denominator, so you can simply compare the numerators. The fraction with the larger numerator is the larger fraction. |
|
9 |
Step |
Among the fractions \$765/546\$, \$210/546 \$, and \$494/546\$, \$765/546\$ has the largest numerator, making it the largest fraction. |
|
10 |
Step |
You can also convert them to decimals \$765/546\$ is approximately |
1.4007 |
11 |
Step |
And also \$210/546\$ is approximately |
0.3846 |
12 |
Step |
And also \$494/546\$ is approximately |
0.9033 |
13 |
Step |
So, the largest fraction among \$17/12, 5/13\$, and \$19/21\$ is |
\$ 765/546 \$ |
14 |
Step |
Therefore, the largest fraction number is |
\$ 17/12 \$ |
15 |
Sumup |
Can you summarize what you’ve understood in the above steps? |
|
16 |
Choice.A |
This is incorrect because it is the smaller fraction |
\$19/21\$ |
17 |
Choice.B |
This is correct because it is the larger fraction |
\$17/12\$ |
18 |
Choice.C |
This is incorrect because only option B is correct |
Both A and B |
19 |
Choice.D |
This is incorrect because option B is the correct answer |
None of the above |
20 |
Answer |
Option |
B |
21 |
Sumup |
Can you summarize what you’ve understood in the above steps? |
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