Lesson Example Discussion Quiz: Class Homework |
Step-2 |
Title: Subtraction of fractions. |
Grade: 4-a Lesson: S3-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. |
Lesson Steps
Test
| Step | Description | Fractions A |
Mixed B |
Decimals C |
Images D |
|---|---|---|---|---|---|
1 |
Expansion |
\$89/5\$ |
\$17 4/5 \$ |
17.8 |
17
|
2 |
Symbol |
|
|||
3 |
Expansion |
\$64/6\$ |
\$10 4/6 \$ |
10.6 |
10
|
4 |
Symbol |
|
|||
5 |
Expansion |
\$214/30 = 107/15 \$ |
\$7 2/15 \$ |
7.1 |
7
|
| Step | Type | Explanation | Answer |
|---|---|---|---|
6 |
Problem |
Given improper fraction |
\$89/5 and 64/6\$ |
7 |
Step |
First, find the Least Common Denominator and rewrite the fractions with the common denominator |
|
8 |
Step |
LCM of 5 and 6 |
\$30\$ |
9 |
Step |
Multiply both the numerator and denominator of each fraction by the number that makes its denominator equal the LCM. |
|
10 |
Step |
Complete the multiplication and the equation becomes |
\$(89 \times 6)/(5 \times 6) - (64 \times 5)/(6 \times 5)\$ |
11 |
Step |
The two fractions now have like denominators so you can subtract the numerators. |
\$(534 - 320)/30\$ |
12 |
Step |
After simplification we get |
\$ 214/30 \$ |
13 |
Step |
This fraction can be reduced by dividing both the numerator and denominator by 2. |
\$\cancel(214)^107 / \cancel(30)^15\$ |
14 |
Step |
After simplification we get |
\$ 107/15 \$ |
15 |
Step |
Convert fraction into a mixed fraction by division |
107 รท 15 |
16 |
Step |
Final fraction: \$"Whole number"+"Numerator"/"Denominator"\$ |
\$7 2/15\$ |
17 |
Answer |
C |
|
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