Counting On and Counting Back

Front

2 + 16 = ?

Back

18

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

20 - 1 = ?

Back

19

Tags

CCSS.2.OA.A.1

Front

12 - 2 = ?

Back

10

Tags

CCSS.1.OA.C.6

Front

6 + 2 = ?

Back

8

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

15 + 3 = ?

Back

18

Tags

CCSS.1.OA.C.6

CCSS.2.OA.B.2

Front

What is counting on?

Back

Counting on is adding numbers by starting from the first number and counting up.

Tags

CCSS.1.OA.A.1

Front

What is counting back?

Back

Counting back is subtracting numbers by starting from the first number and counting down.

Tags

CCSS.1.OA.C.6

Front

What is addition?

Back

Addition is the process of finding the total or sum by combining two or more numbers.

Tags

CCSS.1.OA.A.1

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another.

Tags

CCSS.2.NBT.B.7

Front

What does the plus sign (+) mean?

Back

The plus sign means to add.

Tags

CCSS.1.OA.A.1