Using 10 to Simplify Subtraction

This video tutorial explores various strategies for solving basic subtraction problems. It begins with an introduction to using 10 as a benchmark to simplify calculations, followed by a method of counting backwards to find the difference. The tutorial concludes with the doubles strategy, which involves recognizing pairs of numbers that sum to a known total. These strategies aim to make subtraction easier and more intuitive for learners.

What is the result of 14 minus 5 using the strategy of simplifying with the number 10?

• 11

• 9

• 8

• 10

Which strategy involves using the number 10 to simplify subtraction problems?

• Counting Backwards

• None of the above

• Using 10 to Simplify

• Using Doubles

How do you adjust the result when using 10 to solve 13 minus 9?

• Add 1

• Subtract 1

• Subtract 2

• Add 2

What is the key adjustment made when using 10 to solve 13 minus 9?

• Add 2

• Subtract 1

• Add 1

• Subtract 2

When counting backwards, what is the result of 11 minus 3?

• 10

• 7

• 8

• 9

What is the result of 16 minus 8 using the doubles strategy?

• 9

• 8

• 6

• 7

Which strategy involves recognizing that double 8 is 16?

• None of the above

• Using 10 to Simplify

• Using Doubles

• Counting Backwards