Addition and Subtraction

Front

What is addition?

Back

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

Front

What is subtraction?

Back

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

Front

What does 'altogether' mean in math?

Back

'Altogether' means to combine numbers to find the total.

Front

If you have 355 apples and you get 266 more, how many apples do you have altogether?

Back

621 apples.

Front

If Mr. Fahad has 82 pencils and sells 56, how many does he have left?

Back

26 pencils.

Front

What does 'estimate' mean in math?

Back

Estimate means to find a number that is close to the exact amount, often by rounding.

Front

How do you round 412 to the nearest hundred?

Back

You round 412 to 400.

Front

What is the estimated difference of 412 - 257 when rounded to the nearest hundred?

Back

100.

Front

How do you round 57 to the nearest ten?

Back

You round 57 to 60.

Front

What is the estimated sum of 57 + 99 when rounded to the nearest ten?

Back

160.