Grouping and Ungrouping Techniques for Math Combinations

The video tutorial teaches how to find multiple combinations for the same number using grouping and ungrouping. It explains the concepts of grouping smaller parts into larger groups and ungrouping larger amounts into smaller parts. The tutorial addresses common misconceptions about number combinations and demonstrates various ways to make numbers like 100, 46, 37, and 25 using these methods. The lesson emphasizes the importance of understanding different combinations in math, especially when dealing with addition, subtraction, money, and time.

What does grouping in math involve?

• Adding numbers together

• Subtracting numbers from each other

• Combining smaller parts into a larger group

• Breaking a large group into smaller parts

Which of the following is NOT a way to make $1?

• 100 pennies

• 10 dimes

• 5 nickels and 50 pennies

• 1 quarter and 75 pennies

How can you make 100 using grouping?

• 90 ones and 10 tens

• 80 ones and 2 tens

• 70 ones and 3 tens

• 60 ones and 5 tens

What is the result of ungrouping one ten from 46?

• One ten and thirty-six ones

• Two tens and twenty-six ones

• Three tens and sixteen ones

• Four tens and six ones

How can 37 be represented using ungrouping?

• Three tens and seven ones

• Zero tens and thirty-seven ones

• One ten and twenty-seven ones

• Two tens and seventeen ones

What is the final ungrouped form of 25?

• Two tens and five ones

• One ten and fifteen ones

• Zero tens and twenty-five ones

• Three tens and five ones

Which number can be made by grouping two tens and six ones?

• 26

• 36

• 16

• 46