Front

What is 2-digit addition?

Back

2-digit addition is the process of adding numbers that have two digits, such as 34 + 25.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What does regrouping mean in addition?

Back

Regrouping in addition means carrying over a value from one column to the next when the sum exceeds 9.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the sum of 58 and 39?

Back

97

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is 67 + 15?

Back

82

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is 55 + 16?

Back

71

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is 37 + 49?

Back

86

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the strategy to solve 42 + 18?

Back

You can add the tens first (40 + 10 = 50) and then the ones (2 + 8 = 10), then combine them (50 + 10 = 60).

Tags

CCSS.2.NBT.B.6

Front

What do you do when the sum of the ones place is 10 or more?

Back

You regroup by carrying over 1 to the tens place.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the first step in adding two 2-digit numbers?

Back

Line up the numbers by their place values (tens and ones).

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the sum of 29 and 34?

Back

63

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5