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.

Discussion: Step1 Step2 Step3 Step4 Step5

Lesson Steps

Step Type Explanation Answer

1

Problem

Subtraction of integers:
\$ (+ 5) - (+ 7) \$

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?

Discussion: Step1 Step2 Step3 Step4 Step5


Copyright © 2020-2022 saibook.us Contact: info@saibook.us Version: 1.5 Built: 13-August-2024 09:20AM EST