Doubling Numbers and Sharing Evenly

Maria introduces the concept of doubling, explaining it as adding a number to itself. She provides examples with numbers like 8, 40, 13, and 50, and demonstrates using models for numbers like 32 and 27. A doubles chart is filled to show patterns in even numbers. The lesson concludes with word problems involving doubling, emphasizing problem-solving skills.

What does doubling a number mean?

• Subtracting a number from itself

• Multiplying a number by 2

• Dividing a number by 2

• Adding a number to itself

What is the result of doubling 8?

• 14

• 20

• 18

• 16

How can you visualize doubling 8?

• By multiplying 8 by 3

• By drawing 8 dots and adding 8 more

• By dividing 8 by 2

• By subtracting 4 from 8

What is the result of doubling 40?

• 60

• 70

• 80

• 90

How do you double 13 using tens and ones?

• Divide 13 by 2

• Add 10 and 10, then 3 and 3

• Multiply 13 by 3

• Subtract 3 from 13

What is the result of doubling 50?

• 90

• 100

• 110

• 120

How can you double 32 using boxes?

• By multiplying 32 by 4

• By writing 32 twice and adding the digits

• By subtracting 16 from 32

• By dividing 32 by 2

What is the result of doubling 27 using a model?

• 50

• 60

• 54

• 44

How do you create a new ten when doubling 27?

• By adding 7 and 3

• By multiplying 7 by 2

• By subtracting 3 from 7

• By dividing 7 by 2

What pattern do the answers in a doubles chart follow?

• Even numbers

• Multiples of five

• Prime numbers

• Odd numbers