Word Problems addition and subtraction and estimation

Front

What is a word problem?

Back

A word problem is a mathematical question that is presented in a narrative form, requiring the reader to extract the relevant information to solve it.

Tags

CCSS.8.EE.C.7B

Front

What is addition?

Back

Addition is the mathematical operation of combining two or more numbers to get a total.

Tags

CCSS.1.OA.A.1

Front

What is subtraction?

Back

Subtraction is the mathematical operation of taking one number away from another.

Front

How do you find the total number of items sold?

Back

To find the total number of items sold, add the number of adult tickets to the number of child tickets.

Front

What is estimation?

Back

Estimation is a method of finding an approximate value that is close to the actual number, often used to make calculations easier.

Front

How do you estimate the sum of two numbers?

Back

To estimate the sum, round each number to the nearest ten or hundred and then add the rounded numbers.

Front

If 3,718 tickets were sold and 1,279 were adult tickets, how do you find the number of child tickets?

Back

Subtract the number of adult tickets from the total tickets: 3,718 - 1,279 = 2,439 child tickets.

Tags

CCSS.4.OA.A.3

Front

What is the best way to check your answer in a word problem?

Back

You can check your answer by plugging it back into the problem to see if it makes sense with the given information.

Front

What does 'about how many' mean in a word problem?

Back

'About how many' indicates that you should provide an estimate rather than an exact number.

Front

What is the sum of 473 and 125?

Back

The sum of 473 and 125 is 598.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2