Step-1

Title: Test1

Grade: 6-b Lesson: S1-P1

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:
\$ (- 10) - (- 3) - (+ 2) \$

2

Hint

The three integers are

\$ - 10 , - 3 , 2 \$

3

Step

Subtraction problem turns into an addition problem

\$ ((- 10) - ( - 3 )) + (- 2) \$

4

Step

After subtraction problem turns into an addition problem

\$ ((- 10) + 3) + (- 2) \$

5

Formula:

If we follow the addition rule of positive and negative integers

\$ (-) + (+) = "use the sign of larger absolute value number" \$

6

Step

Let us add both the positive and negative integers

\$( - 10 + 3 ) + (- 2) \$

7

Step

After adding both positive and negative integers

\$(- 7) + (- 2) \$

8

Step

Here we apply the rule of addition of negative integers

\$ (-) + (-) = (-)\$

9

Step

Let us add both the negative integers

\$ (- 7) + (- 2) \$

10

Step

After adding both negative integers

\$-7 - 2 \$

11

Step

After adding

\$ - 9 \$

12

Step

Therefore, the subtraction of integers is \$ - 9 \$.

13

Choice.A

Incorrect; integer subtraction doesn’t involve subtracting the absolute value of 2 from the result

-5

14

Choice.B

Correct: When you add (+5) and subtract (-7), the result (-2) aligns with our calculation

-9

15

Choice.C

This claims (+5) − (+7) equals -1, yet our calculation reveals it equals -2, rendering it wrong

-7

16

Choice.D

This choice falsely states that adding 5 to -7 equals -3, conflicting with our precise result of -2

-11

17

Answer

Option

B

18

Sumup

Can you summarize what you’ve understood in the above steps?

Discussion: Step1 Step2 Step3 Step4 Step5


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