Estimating and Solving Word Problems

Front

What is a key word for addition?

Back

altogether

Front

Should you estimate or solve this problem? There are 78 students in third grade. 43 of the students are boys and the rest are girls. How many girls are in third grade?

Back

Solve

Front

Estimate the difference to the NEAREST TEN: 845 - 328

Back

520

Front

Is this addition or subtraction? Calvin had 314 sheets of paper. Aaron gave him some more sheets of paper. Now Calvin has 729 sheets of paper. How many sheets of paper did Aaron give?

Back

Subtraction (-)

Front

Should you estimate or solve this problem? 154 box tops were collected last month. 133 box tops were collected this month. About how many box tops were collected last month?

Back

Estimate

Front

What does 'estimate' mean in math?

Back

To make a close guess about a number without calculating exactly.

Front

What is the difference between 'estimate' and 'solve'?

Back

Estimate is a rough calculation; solve is finding the exact answer.

Front

What is a key word for subtraction?

Back

difference

Front

What is the first step in solving a word problem?

Back

Read the problem carefully.

Front

What is the purpose of estimating in math?

Back

To quickly understand the size of a number or the result.