Constant Difference Subtraction Strategy Explained

What does 'constant' imply in the constant difference strategy?

• Changing difference

• Variable difference

• Multiplicative difference

• Unchanging difference

What is the purpose of reaching a 'friendly number' in the constant difference strategy?

• To simplify subtraction

• To simplify addition

• To simplify multiplication

• To simplify division

In the example 4,000 - 346, what is the friendly number used?

• 4,000

• 3,999

• 3,500

• 3,450

What adjustment is made to both numbers in the constant difference strategy for the problem 4,000 - 346?

• Subtract 1 from both

• Add 1 to both

• Add 10 to both

• Subtract 10 from both

What is the result of the subtraction 4,000 - 346 using the constant difference strategy?

• 3,655

• 3,654

• 3,653

• 3,652

Can the constant difference strategy be used for addition?

• No, never

• Yes, but only in specific cases

• Yes, always

• No, but it can be modified for addition

In the example 2,009 - 224, what friendly number is aimed for?

• 2,100

• 2,000

• 2,999

• 2,900

What is the adjustment made to the numbers in the problem 2,009 - 224?

• Add 16 to both

• Subtract 16 from both

• Add 15 to both

• Subtract 15 from both

What is the final result of the subtraction 2,009 - 224 using the constant difference strategy?

• 2,757

• 2,759

• 2,758

• 2,760

What does the constant difference strategy help achieve in subtraction?

• Complex division

• Faster multiplication

• Easier addition

• Simpler subtraction