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
\$17/12, 5/13 , 19/21\$

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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