Mastering Addition of Three Numbers

The video tutorial explains how to calculate the total number of shapes by adding their quantities. It demonstrates the addition of numbers and explores whether the order of addition affects the result, emphasizing the commutative property of addition.

How many types of shapes were introduced?

• Two

• Three

• Four

• Five

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CCSS.1.G.A.1

CCSS.2.G.A.1

Which shape had the highest quantity?

• Stars

• Circles

• Squares

• Triangles

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CCSS.2.MD.D.9

What is the first step to find the total number of shapes?

• Subtract the numbers

• Add the numbers

• Divide the numbers

• Multiply the numbers

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CCSS.2.OA.C.4

What is the sum of five stars and three squares?

• 9

• 8

• 7

• 6

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CCSS.1.OA.A.1

What total do you get when adding five, three, and six?

• 15

• 14

• 13

• 12

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CCSS.1.OA.A.1

Does the order of addition change the total sum?

• Sometimes

• Only with larger numbers

• Yes, always

• No, never

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CCSS.1.OA.B.3

What is the sum of three squares and six triangles?

• 9

• 10

• 11

• 8

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CCSS.1.NBT.A.1

What is the result of adding five to nine?

• 14

• 16

• 15

• 13

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CCSS.1.OA.A.1

If you first add five and six, what do you get before adding the third number?

• 10

• 11

• 12

• 13

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CCSS.5.OA.A.1

CCSS.5.OA.A.2

What is a good strategy to remember basic addition facts?

• Guessing

• Memorization

• Using a calculator

• Asking someone

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CCSS.1.OA.C.6

CCSS.2.OA.B.2