Lesson Example Discussion Quiz: Class Homework |
Step-3 |
Title: Unlike fraction Addition |
Grade: 5-a Lesson: S2-L3 |
Explanation: Hello Students, time to practice and review the steps. Let us take next 2-5 minutes to solve the steps for the problems. This is a good exercise to check your understanding of the concepts.Second student to identify and review important steps.Focus on understanding the concepts and application to solving problems step by step. |
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Add \$12/7\$ + \$14/9\$. |
|
2 |
Step |
Given fractions are |
\$12/7\$, \$14/9\$ |
3 |
Step |
Least Common Multiple (LCM) between the denominators |
LCM of 7, 9 = 63 |
4 |
Step |
Multiply the numerator and denominator of each fraction by a number so that they have the LCM as their new denominator |
\$(12 × 9) + (14 × 7)\$/63 |
5 |
Step |
Add the numerators and keep the denominator the same |
\$(108 + 98)/63\$ = \$206/63\$ |
6 |
Step |
After adding, the resulting fraction is \$206/63\$ |
|
7 |
Answer |
Option |
B |
8 |
Sumup |
Can you summarize what you’ve understood in the above steps? |
|
9 |
Choice.A |
This option is incorrect because it’s not the sum of the given fractions |
\$200/63\$ |
10 |
Choice.B |
This option is correct \$108/63\$ + \$98/63\$ = \$108 + 98 / 63\$ = \$206/63\$ |
\$206/63\$ |
11 |
Choice.C |
This option is incorrect because 205 is not the result of adding 108 and 63, nor is it a valid simplification of the addition |
\$205/63\$ |
12 |
Choice.D |
This option is incorrect because the sum of the numerators is 108 + 98 = 206, not 201 |
\$201/63\$ |
13 |
Sumup |
Can you summarize what you’ve understood in the above steps? |
|
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