Multiply Multiples of 10

What is the 4th step of the multiple of 10 method?

• Multiply the factors

• Re-write the original equation

• Break down one of the factors

• All of these are correct

10 x 9=

• 40

• 70

• 80

• 90

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CCSS.3.NBT.A.3

CCSS.3.OA.A.1

CCSS.3.OA.A.3

CCSS.3.OA.C.7

90 x 4=?

• 67

• 34

• 360

• 40

Tags

CCSS.3.NBT.A.3

CCSS.3.OA.A.1

CCSS.3.OA.B.5

80 x 5=400

• Yes

• No

• I dont know

• Maybe

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CCSS.3.NBT.A.3

CCSS.3.OA.A.1

CCSS.3.OA.B.5

30 x 7=?

• 210

• 670

• 905

• 562

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CCSS.3.NBT.A.3

CCSS.3.OA.A.1

Does 40 x 3=170

• Yes!

• No

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CCSS.3.OA.A.1

CCSS.3.OA.C.7

What are the symbols used to group numbers when multiplying called? Example: (3 x 4)

• parenthesis

• commas

• PERIODT!

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CCSS.5.OA.A.1

CCSS.5.OA.A.2

The ________ property tells me that I can use parenthesis to group the numbers that I want to multiply the way I want and my product will be the same.

• commutative

• associative

• inverse

• property brothers

Tags

CCSS.3.OA.B.5

Which is an example of the associative property?

• 2 x 3 = 6

• 9 x 4 x 8 x 7

• (6 x 3) x 2= 36

• {9 x 3}= 27

Tags

CCSS.3.OA.B.5

When trying to quickly solve 70 x 3, I can multiply 7 x 3 then add a _______.

• zero '0'

• 2

• 4

• 67

Tags

CCSS.3.NBT.A.3

CCSS.3.OA.A.1