Exploring Addition and Subtraction with Sea Monsters and Superheroes

The video tutorial presents two math problems. The first involves determining the number of real superheroes from a group of fourteen, three of whom are villains. The solution involves simple subtraction. The second problem involves counting sea monsters in a lake, given that some have stripes and others have spots. This problem is solved using addition. The video guides viewers through the problem-solving process, encouraging them to pause and attempt solutions independently before providing step-by-step explanations.

How many superheroes initially met on the moon?

• 11 superheroes

• 14 superheroes

• 3 villains

• 17 characters

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CCSS.2.OA.A.1

How many of the characters were villains in disguise?

• 17 characters

• 14 superheroes

• 11 superheroes

• 3 villains

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CCSS.RI.6.7

CCSS.RI.7.7

CCSS.RI.9-10.7

CCSS.RL.6.7

CCSS.RL.7.7

What is the correct method to find the number of real superheroes?

• Divide the superheroes by the villains

• Multiply the number of villains by superheroes

• Subtract the villains from the superheroes

• Add the villains to the superheroes

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CCSS.7.EE.B.3

How many real superheroes were there?

• 3 villains

• 11 superheroes

• 17 characters

• 14 superheroes

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CCSS.HSN.VM.C.6

What unique features do the sea monsters have?

• Spots and horns

• Stripes and wings

• Wings and horns

• Stripes and spots

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CCSS.RI.11-12.5

CCSS.RI.6.5

CCSS.RI.7.5

CCSS.RI.8.5

CCSS.RI.9-10.5

How many sea monsters have stripes?

• 11 with stripes

• 9 with stripes

• 5 with spots

• 14 in total

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CCSS.1.NBT.A.1

How many sea monsters have spots?

• 11 with spots

• 14 in total

• 5 with spots

• 9 with stripes

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CCSS.1.NBT.A.1

What is the total number of sea monsters in the lake?

• 9 monsters

• 5 monsters

• 14 monsters

• 11 monsters

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CCSS.1.NBT.A.1

How do you calculate the total number of sea monsters?

• Subtract spots from stripes

• Add stripes to spots

• Multiply stripes by spots

• Divide the total by spots

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CCSS.3.OA.A.3

Which of the following is a correct calculation method shown in the video?

• Neither A nor B

• 14 minus 3 equals 11

• 9 plus 5 equals 14

• Both A and B

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CCSS.2.OA.A.1