Adding and Subtracting Three-Digit Numbers

Front

What is addition?

Back

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

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CCSS.1.OA.A.1

Front

What is subtraction?

Back

Subtraction is the process of finding the difference between two numbers by taking one number away from another.

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CCSS.2.OA.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

What is the sum of 100 and 200?

Back

300

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CCSS.4.NBT.B.4

Front

What is the difference between 500 and 200?

Back

300

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CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

Front

How do you add 345 and 278?

Back

Align the numbers by place value and add each column: 345 + 278 = 623.

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CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

Front

How do you subtract 543 from 876?

Back

Align the numbers by place value and subtract each column: 876 - 543 = 333.

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CCSS.3.NBT.A.2

CCSS.2.NBT.B.7

Front

What is regrouping in addition?

Back

Regrouping is when you carry over a value to the next column when the sum exceeds 9.

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CCSS.2.NBT.B.5

CCSS.1.NBT.C.4

Front

What is regrouping in subtraction?

Back

Regrouping is when you borrow from the next column when the top number is smaller than the bottom number.

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CCSS.7.NS.A.1C

Front

What is the result of adding 567 and 432?

Back

999

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CCSS.3.NBT.A.2

CCSS.2.NBT.B.7