2 and 3 Digit Addition and Subtractionion

Front

What is the result of adding two numbers together?

Back

The result of adding two numbers together is called the sum.

Tags

CCSS.6.EE.A.1

Front

What is the result of subtracting one number from another?

Back

The result of subtracting one number from another is called the difference.

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CCSS.7.NS.A.1C

Front

How do you find the total number of items when more items are added?

Back

To find the total number of items when more items are added, you add the number of items received to the original number of items.

Tags

CCSS.1.OA.A.1

Front

If you have a certain number of items and give some away, how do you find out how many are left?

Back

To find out how many items are left after giving some away, you subtract the number of items given away from the original number of items.

Tags

CCSS.2.OA.A.1

Front

What is the process of finding out how many more one quantity is than another?

Back

To find out how many more one quantity is than another, you subtract the smaller quantity from the larger quantity.

Tags

CCSS.2.OA.A.1

Front

What is the importance of place value in addition and subtraction?

Back

Place value is important in addition and subtraction because it helps to align numbers correctly according to their value (ones, tens, hundreds) when performing calculations.

Tags

CCSS.2.NBT.B.7

Front

What is a two-digit number?

Back

A two-digit number is a number that has two places, ranging from 10 to 99.

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CCSS.1.NBT.A.1

Front

What is a three-digit number?

Back

A three-digit number is a number that has three places, ranging from 100 to 999.

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CCSS.2.NBT.A.3

Front

How do you add two-digit numbers?

Back

To add two-digit numbers, align the numbers by place value and add the digits starting from the rightmost column, carrying over if necessary.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

How do you subtract two-digit numbers?

Back

To subtract two-digit numbers, align the numbers by place value and subtract the digits starting from the rightmost column, borrowing if necessary.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2