Understanding Doubles Plus One

What is a doubles fact in mathematics?

• Adding two different numbers to get a sum

• Adding a number to itself to get a sum

• Subtracting a number from itself

• Multiplying a number by zero

How does the concept of 'doubles plus one' help in solving 4 + 5?

• By multiplying 4 by 5

• By subtracting 1 from 5

• By dividing 5 by 4

• By using the fact 4 + 4 = 8 and adding one more

Which doubles fact can help solve the problem 2 + 3?

• 3 + 3 = 6

• 2 + 2 = 4

• 1 + 1 = 2

• 4 + 4 = 8

What is the result of 6 + 7 using the doubles plus one method?

• 15

• 13

• 12

• 14

What should you do for homework related to the doubles plus one concept?

• Create a doubles fact chart

• Memorize all doubles facts

• Solve 10 more doubles plus one problems

• Write down the doubles fact used to solve 6 + 7