1/3/21 Adding double digits with regrouping

Front

What is regrouping in addition?

Back

Regrouping in addition is when you combine numbers that are more than 10 and carry over to the next place value.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What does it mean to add double digits?

Back

Adding double digits means to add two numbers that each have two digits, like 23 + 45.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the sum of 27 and 15?

Back

The sum of 27 and 15 is 42.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

How do you add 58 and 34 using regrouping?

Back

First, add the ones: 8 + 4 = 12. Write down 2 and carry over 1. Then add the tens: 5 + 3 + 1 = 9. So, 58 + 34 = 92.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is a place value?

Back

Place value is the value of where a digit is in a number, like ones, tens, hundreds.

Tags

CCSS.4.NBT.A.1

Front

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

Back

You regroup by carrying over 1 to the next column.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is 46 + 27?

Back

46 + 27 = 73.

Tags

CCSS.2.NBT.B.5

Front

What is the first step in adding double digits?

Back

The first step is to add the numbers in the ones place.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the total of 39 and 24?

Back

39 + 24 = 63.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What happens if you have 9 + 5 in the ones place?

Back

You regroup because 9 + 5 = 14. Write down 4 and carry over 1.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5