Addition & Subtraction w/in 20 and Odds vs Evens

12 + 5 =

• 7

• 17

• 12

• 15

Answer explanation

Start with 12 and count on

12, 13, 14, 15, 16, 17

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Mrs. Ramirez has 7 girls and 8 boys in her second grade class. How many children are in Mrs. Ramirez's class?

• 12

• 19

• 6

• 15

Answer explanation

You can use near double facts to solve

7 + 7 = 14

7 + 7 + 1 = 15

Tags

CCSS.1.OA.A.1

Gabriel has more than 10 Pokemon cards. He has an odd number of Pokemon cards. How many Pokemon cards does Gabriel have?

• 8

• 3

• 12

• 13

Answer explanation

More than 10 means any number higher than 10

Odd is a number you cannot break into pairs (no twins)

Tags

CCSS.2.OA.C.3

18 - 10 =

• 12

• 8

• 0

• 18

Answer explanation

Start with 18 and count back

18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8

or

18 - 8 = 10

18 - 8 - 2 = 8

Tags

CCSS.2.NBT.B.5

13 - 8 =

• 12

• 13

• 5

• 3

Answer explanation

Start at 13 and count back

13, 12, 11, 10, 9, 8, 7, 6, 5

Tags

CCSS.2.OA.A.1

Which of these is an even group of shoes?

• 
• 
• 
• 

Answer explanation

even is an equal pair of numbers (twins)

Ex. 5 + 5, 2 + 2 or 8 + 8

Tags

CCSS.2.OA.C.3

Which of these is an equation?

• 2 + 3 = 5

• 5

• 2 + 3

• 10 - 3 = 4

Answer explanation

An equation is a mathematical sentence that has two equal sides separated by an equal sign (=)

10 - 6 = 4

7 + 11 = 18

1 + 4 = 2 + 3

Tags

CCSS.2.OA.C.3

Joy's favorite candies are gum and lollipops. Her mom gave her 20 candies. 12 of the candies are gum. How many are lollipops?

• 12

• 20

• 3

• 8

Answer explanation

Joy had 20 candies in total made up of lollipops and gum. Since 12 are gum, the rest are lollipops.

20 - 12 = 8

Tags

CCSS.2.OA.A.1

Deejay read 18 books. Luke read 11 books. How many more books did Deejay read?

• 3

• 11

• 7

• 19

Answer explanation

Deejay read more books (18) than Luke (11). "How many more" is phrase for subtraction.

18 - 11 = 7

Tags

CCSS.2.OA.A.1

9 + 5 =

• 14

• 11

• 9

• 4

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2