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Step-1

Title: Adding signed numbers

Grade: 6-a Lesson: S1-L2

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Addition of integers: \$ 171 + 112 \$
2	Hint	The two integers are	\$ 171,112 \$
3	Formula:	Here we apply the rule of addition of positive and positive integers	\$ ( + ) + ( + ) = ( + )\$
4	Step	Let us add both the positive integers	\$ 171 + 112 \$
5	Step	After adding we get	\$ 283 \$
6	Step	Therefore, the addition of integers is \$ 283 \$.
7	Choice.A	This is not correct because it doesn’t represent the correct sum of the integers. The sum of 171 and 112 is 283, not 225	225
8	Choice.B	This is correct because it matches the result of adding 171 and 111	283
9	Choice.C	This is not correct because it doesn’t match the result of adding 171 and 112	243
10	Choice.D	This is not correct because it does not represent the sum of the two integers given	256
11	Answer	Option	B
12	Sumup	Can you summarize what you’ve understood in the above steps?

Step

Type

Explanation

Answer

Problem

Addition of integers:
\$ 171 + 112 \$

Hint

The two integers are

\$ 171,112 \$

Formula:

Here we apply the rule of addition of positive and positive integers

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

Step

Let us add both the positive integers

\$ 171 + 112 \$

Step

After adding we get

\$ 283 \$

Step

Therefore, the addition of integers is \$ 283 \$.

Choice.A

This is not correct because it doesn’t represent the correct sum of the integers. The sum of 171 and 112 is 283, not 225

225

Choice.B

This is correct because it matches the result of adding 171 and 111

283

Choice.C

This is not correct because it doesn’t match the result of adding 171 and 112

243

Choice.D

This is not correct because it does not represent the sum of the two integers given

256

Answer

Option

Sumup

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