Odd, Even, and Arrays

Select the correct number model with the rectangular array

• 4+4+4+4=16
• 2+2+2+2=8
• 5+5+5+5=20
• 3+3+3+3=12

Tags

CCSS.2.OA.C.4

Select the correct number model with the rectangular array

• 5+5+5=15
• 3+3+3=9
• 3+3+3+3+3=15
• 5+5+5+5+5=30

Tags

CCSS.2.OA.C.4

What repeated addition sentence matches the number line?

• 3 + 3 + 3 + 3 = 12

• 3 + 3 + 3 = 12

• 4 + 4 + 4 = 12

• 0 + 3 + 6 + 3 = 12

Tags

CCSS.2.OA.A.1

What two equations describe the model?

• 3+3+3+3+3

  or

  5x3

• 5+5+5+5+5

  or

  5x3

• 3+3+3

  or

  3x5

• 3+3+3

  or

  3x3

Tags

CCSS.2.OA.C.4

Which is an even group of apples? Choose the THREE correct answers.

• A

• B

• C

• D

• E

Tags

CCSS.2.OA.C.3

• 10+5+1

• 3+3+3+3+3+1

• 5+5+5+1

• 8+8

Tags

CCSS.2.OA.C.3

Which set has an odd number of hats?

• A

• B

• C

• D

Tags

CCSS.2.OA.C.3

Which set shows an even number of balloons?

• A

• B

• C

• D

Tags

CCSS.2.OA.C.3

Which equation shows the number of ducks shown above?

• 5+4=9

• 5+5+5+5+5=25

• 4+4+4+4+4=20

• 5+5+5=15

Tags

CCSS.2.OA.C.4

What is an odd number?

• a group of objects set in equal rows and columns

• a number than can not be shown in pairs of cubes

• a number that can be shown in pairs of cubes

• An addition equation where the addends are all the same.

Tags

CCSS.2.OA.C.3