CUBES Strategy for Addition and Subtraction Mastery

The video tutorial focuses on solving story problems by adding and subtracting two-digit numbers. It introduces key signal words that indicate whether to add or subtract and explains the CUBES strategy for problem-solving. The CUBES strategy involves circling numbers, underlining questions, boxing key words, evaluating the problem, and solving it. The tutorial provides examples of both addition and subtraction problems, demonstrating how to apply the CUBES strategy effectively.

What is one of the learning goals mentioned in the video?

• I can divide two-digit numbers.

• I can solve geometry problems.

• I can multiply two-digit numbers.

• I can solve story problems.

Tags

CCSS.3.OA.D.8

Which keyword signals that you need to add in a story problem?

• Difference

• How many left

• How many less

• In all

Tags

CCSS.1.OA.A.1

What does the keyword 'difference' indicate in a story problem?

• Addition

• Division

• Multiplication

• Subtraction

Tags

CCSS.5.NBT.B.7

Which keyword indicates that you need to subtract in a story problem?

• How many left

• How many more

• Total

• Sum

Tags

CCSS.1.OA.A.1

What does the 'C' in the CUBES strategy stand for?

• Check the numbers

• Compare the numbers

• Circle the numbers

• Calculate the numbers

Tags

CCSS.7.NS.A.3

What is the purpose of underlining the question in the CUBES strategy?

• To evaluate the problem

• To identify the keywords

• To focus on what needs to be solved

• To highlight the numbers

In the subtraction problem example, how many people were left at the stadium?

• 17

• 84

• 77

• 67

Tags

CCSS.2.OA.A.1

What does the 'E' in the CUBES strategy remind us to do?

• Eliminate wrong answers

• Estimate the numbers

• Explain the problem

• Evaluate and decide how to solve

Tags

CCSS.7.NS.A.3

In the addition problem example, how many people went to the carnival in total?

• 68

• 127

• 130

• 59

Tags

CCSS.2.OA.A.1

What does the 'S' in the CUBES strategy stand for?

• Subtract the numbers

• Solve the problem and check

• Simplify the problem

• Sum the numbers