10/2 Mental Math Monday

What is 0.7 + 0.8?

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CCSS.5.NBT.B.7

Which fraction is equivalent to a half?

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CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

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CCSS.3.OA.B.6

Write the the number eighteen thousand two hundred seven in numbers.

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CCSS.4.NBT.A.2

What is the missing number?

4081 = 4001 + ?

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CCSS.5.NBT.A.2

How many vertices in a triangular pyramid?

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CCSS.6.G.A.4

Is 15 a prime or composite number?

• prime

• composite

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CCSS.4.OA.B.4

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CCSS.7.NS.A.1C

I have $10. I spend $2.70. How much money do I have left?

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CCSS.6.NS.B.3

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CCSS.3.MD.A.1