Adding and Subtracting Rational Numbers Explained

The video tutorial introduces the scoreboard strategy for adding and subtracting rational numbers, including integers, negative decimals, and fractions. It explains the concept of absolute value and demonstrates the strategy through examples. The tutorial provides step-by-step instructions and encourages students to practice with additional problems. Homework involving word problems is assigned, with instructions to cut and glue them into a journal for further practice.

What is the main topic of today's lesson?

• Multiplication of fractions

• Addition and subtraction of rational numbers

• Division of integers

• Geometry

Tags

CCSS.7.NS.A.1C

What does the absolute value represent?

• The sum of all numbers

• The distance from zero

• The product of two numbers

• The difference between two numbers

Tags

CCSS.6.NS.C.7C

In the problem -2 + 2 - 1, what is the final result?

• -2

• 1

• -1

• 0

Tags

CCSS.7.NS.A.1C

What is the first step in the scoreboard strategy?

• Multiply the numbers

• Box from the back

• Add all numbers

• Subtract the smallest number

Tags

CCSS.1.OA.A.1

When subtracting a number, what operation are you actually performing?

• Subtracting twice

• Adding the opposite

• Dividing by two

• Multiplying by zero

Tags

CCSS.7.NS.A.1C

In the problem -3 + 1 - (-2), what is the result after applying the scoreboard strategy?

• 2

• 3

• 1

• 0

Tags

CCSS.7.NS.A.1C

What should you do after boxing the numbers in the scoreboard strategy?

• Subtract the columns

• Divide the numbers

• Add the columns

• Multiply the numbers

Tags

CCSS.2.NBT.B.7

In the problem 6 - 5 - (-1), what is the final result?

• 3

• 2

• 1

• 0

Tags

CCSS.7.NS.A.1C

What is the final result of the problem -3 + 4 - 3?

• 1

• -1

• 2

• 0

Tags

CCSS.7.NS.A.1C

What should you do with the word problems given for homework?

• Ignore them

• Write them on a separate sheet

• Cut them out and glue them in your journal

• Solve them in your head

Tags

CCSS.2.OA.A.1