Lesson Example Discussion Quiz: Class Homework |
Step-1 |
Title: Subtracting signed numbers |
Grade: 6-b Lesson: S1-L3 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
Step | Type | Explanation | Answer |
---|---|---|---|
1 |
Problem |
Subtraction of integers: |
|
2 |
Hint |
The two integers are |
\$+ 5 , + 7 \$ |
3 |
Step |
Subtraction problem turns into an addition problem |
\$ (+5) + (-7) \$ |
4 |
Formula: |
If we follow the addition rule of positive and negative integers |
\$ (+) + (-) = "use the sign of larger absolute value number" \$ |
5 |
Step |
Let us add both the positive and negative integers |
\$ 5 + (-7) \$ |
6 |
Step |
After adding both positive and negative integers |
\$ 5 - 7 \$ |
7 |
Step |
After Subtraction |
\$ - 2 \$ |
8 |
Step |
Therefore, the subtraction of integers is \$ - 2 \$. |
|
9 |
Choice.A |
This result doesn’t arise from the process of numerical subtraction |
-4 |
10 |
Choice.B |
This confirms that adding five and subtracting seven results in a negative two, which is correct |
-2 |
11 |
Choice.C |
This option claims (+5) minus (+7) equals -1, contradicting our calculation of -2, thus it’s wrong |
-1 |
12 |
Choice.D |
This suggests (+5) − (+7) equals -3, but our calculation shows it equals -2, making it incorrect |
-3 |
13 |
Answer |
Option |
B |
14 |
Sumup |
Can you summarize what you’ve understood in the above steps? |
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